20309100

素因数分解:

$2^2\times 3^1\times 5^2\times 7^1\times {\mathrm{19}}^1\times {\mathrm{509}}^1$

素因数の和:552

約数の個数: 144

約数和(自身を含む): 70828800

約数和(自身を除く): 50519700

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 19, 20, 21, 25, 28, 30, 35, 38, 42, 50, 57, 60, 70, 75, 76, 84, 95, 100, 105, 114, 133, 140, 150, 175, 190, 210, 228, 266, 285, 300, 350, 380, 399, 420, 475, 509, 525, 532, 570, 665, 700, 798, 950, 1018, 1050, 1140, 1330, 1425, 1527, 1596, 1900, 1995, 2036, 2100, 2545, 2660, 2850, 3054, 3325, 3563, 3990, 5090, 5700, 6108, 6650, 7126, 7635, 7980, 9671, 9975, 10180, 10689, 12725, 13300, 14252, 15270, 17815, 19342, 19950, 21378, 25450, 29013, 30540, 35630, 38175, 38684, 39900, 42756, 48355, 50900, 53445, 58026, 67697, 71260, 76350, 89075, 96710, 106890, 116052, 135394, 145065, 152700, 178150, 193420, 203091, 213780, 241775, 267225, 270788, 290130, 338485, 356300, 406182, 483550, 534450, 580260, 676970, 725325, 812364, 967100, 1015455, 1068900, 1353940, 1450650, 1692425, 2030910, 2901300, 3384850, 4061820, 5077275, 6769700, 10154550, 20309100]

約数ペア:

[(1, 20309100), (2, 10154550), (3, 6769700), (4, 5077275), (5, 4061820), (6, 3384850), (7, 2901300), (10, 2030910), (12, 1692425), (14, 1450650), (15, 1353940), (19, 1068900), (20, 1015455), (21, 967100), (25, 812364), (28, 725325), (30, 676970), (35, 580260), (38, 534450), (42, 483550), (50, 406182), (57, 356300), (60, 338485), (70, 290130), (75, 270788), (76, 267225), (84, 241775), (95, 213780), (100, 203091), (105, 193420), (114, 178150), (133, 152700), (140, 145065), (150, 135394), (175, 116052), (190, 106890), (210, 96710), (228, 89075), (266, 76350), (285, 71260), (300, 67697), (350, 58026), (380, 53445), (399, 50900), (420, 48355), (475, 42756), (509, 39900), (525, 38684), (532, 38175), (570, 35630), (665, 30540), (700, 29013), (798, 25450), (950, 21378), (1018, 19950), (1050, 19342), (1140, 17815), (1330, 15270), (1425, 14252), (1527, 13300), (1596, 12725), (1900, 10689), (1995, 10180), (2036, 9975), (2100, 9671), (2545, 7980), (2660, 7635), (2850, 7126), (3054, 6650), (3325, 6108), (3563, 5700), (3990, 5090)]