20212500

素因数分解:

$2^2\times 3^1\times 5^5\times 7^2\times {\mathrm{11}}^1$

素因数の和:57

約数の個数: 216

約数和(自身を含む): 74807712

約数和(自身を除く): 54595212

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 11, 12, 14, 15, 20, 21, 22, 25, 28, 30, 33, 35, 42, 44, 49, 50, 55, 60, 66, 70, 75, 77, 84, 98, 100, 105, 110, 125, 132, 140, 147, 150, 154, 165, 175, 196, 210, 220, 231, 245, 250, 275, 294, 300, 308, 330, 350, 375, 385, 420, 462, 490, 500, 525, 539, 550, 588, 625, 660, 700, 735, 750, 770, 825, 875, 924, 980, 1050, 1078, 1100, 1155, 1225, 1250, 1375, 1470, 1500, 1540, 1617, 1650, 1750, 1875, 1925, 2100, 2156, 2310, 2450, 2500, 2625, 2695, 2750, 2940, 3125, 3234, 3300, 3500, 3675, 3750, 3850, 4125, 4375, 4620, 4900, 5250, 5390, 5500, 5775, 6125, 6250, 6468, 6875, 7350, 7500, 7700, 8085, 8250, 8750, 9375, 9625, 10500, 10780, 11550, 12250, 12500, 13125, 13475, 13750, 14700, 16170, 16500, 17500, 18375, 18750, 19250, 20625, 21875, 23100, 24500, 26250, 26950, 27500, 28875, 30625, 32340, 34375, 36750, 37500, 38500, 40425, 41250, 43750, 48125, 52500, 53900, 57750, 61250, 65625, 67375, 68750, 73500, 80850, 82500, 87500, 91875, 96250, 103125, 115500, 122500, 131250, 134750, 137500, 144375, 153125, 161700, 183750, 192500, 202125, 206250, 240625, 262500, 269500, 288750, 306250, 336875, 367500, 404250, 412500, 459375, 481250, 577500, 612500, 673750, 721875, 808500, 918750, 962500, 1010625, 1347500, 1443750, 1684375, 1837500, 2021250, 2887500, 3368750, 4042500, 5053125, 6737500, 10106250, 20212500]

約数ペア:

[(1, 20212500), (2, 10106250), (3, 6737500), (4, 5053125), (5, 4042500), (6, 3368750), (7, 2887500), (10, 2021250), (11, 1837500), (12, 1684375), (14, 1443750), (15, 1347500), (20, 1010625), (21, 962500), (22, 918750), (25, 808500), (28, 721875), (30, 673750), (33, 612500), (35, 577500), (42, 481250), (44, 459375), (49, 412500), (50, 404250), (55, 367500), (60, 336875), (66, 306250), (70, 288750), (75, 269500), (77, 262500), (84, 240625), (98, 206250), (100, 202125), (105, 192500), (110, 183750), (125, 161700), (132, 153125), (140, 144375), (147, 137500), (150, 134750), (154, 131250), (165, 122500), (175, 115500), (196, 103125), (210, 96250), (220, 91875), (231, 87500), (245, 82500), (250, 80850), (275, 73500), (294, 68750), (300, 67375), (308, 65625), (330, 61250), (350, 57750), (375, 53900), (385, 52500), (420, 48125), (462, 43750), (490, 41250), (500, 40425), (525, 38500), (539, 37500), (550, 36750), (588, 34375), (625, 32340), (660, 30625), (700, 28875), (735, 27500), (750, 26950), (770, 26250), (825, 24500), (875, 23100), (924, 21875), (980, 20625), (1050, 19250), (1078, 18750), (1100, 18375), (1155, 17500), (1225, 16500), (1250, 16170), (1375, 14700), (1470, 13750), (1500, 13475), (1540, 13125), (1617, 12500), (1650, 12250), (1750, 11550), (1875, 10780), (1925, 10500), (2100, 9625), (2156, 9375), (2310, 8750), (2450, 8250), (2500, 8085), (2625, 7700), (2695, 7500), (2750, 7350), (2940, 6875), (3125, 6468), (3234, 6250), (3300, 6125), (3500, 5775), (3675, 5500), (3750, 5390), (3850, 5250), (4125, 4900), (4375, 4620)]