21131250

素因数分解:

$2^1\times 3^1\times 5^5\times 7^2\times {\mathrm{23}}^1$

素因数の和:67

約数の個数: 144

約数和(自身を含む): 64120896

約数和(自身を除く): 42989646

約数列:

[1, 2, 3, 5, 6, 7, 10, 14, 15, 21, 23, 25, 30, 35, 42, 46, 49, 50, 69, 70, 75, 98, 105, 115, 125, 138, 147, 150, 161, 175, 210, 230, 245, 250, 294, 322, 345, 350, 375, 483, 490, 525, 575, 625, 690, 735, 750, 805, 875, 966, 1050, 1127, 1150, 1225, 1250, 1470, 1610, 1725, 1750, 1875, 2254, 2415, 2450, 2625, 2875, 3125, 3381, 3450, 3675, 3750, 4025, 4375, 4830, 5250, 5635, 5750, 6125, 6250, 6762, 7350, 8050, 8625, 8750, 9375, 11270, 12075, 12250, 13125, 14375, 16905, 17250, 18375, 18750, 20125, 21875, 24150, 26250, 28175, 28750, 30625, 33810, 36750, 40250, 43125, 43750, 56350, 60375, 61250, 65625, 71875, 84525, 86250, 91875, 100625, 120750, 131250, 140875, 143750, 153125, 169050, 183750, 201250, 215625, 281750, 301875, 306250, 422625, 431250, 459375, 503125, 603750, 704375, 845250, 918750, 1006250, 1408750, 1509375, 2113125, 3018750, 3521875, 4226250, 7043750, 10565625, 21131250]

約数ペア:

[(1, 21131250), (2, 10565625), (3, 7043750), (5, 4226250), (6, 3521875), (7, 3018750), (10, 2113125), (14, 1509375), (15, 1408750), (21, 1006250), (23, 918750), (25, 845250), (30, 704375), (35, 603750), (42, 503125), (46, 459375), (49, 431250), (50, 422625), (69, 306250), (70, 301875), (75, 281750), (98, 215625), (105, 201250), (115, 183750), (125, 169050), (138, 153125), (147, 143750), (150, 140875), (161, 131250), (175, 120750), (210, 100625), (230, 91875), (245, 86250), (250, 84525), (294, 71875), (322, 65625), (345, 61250), (350, 60375), (375, 56350), (483, 43750), (490, 43125), (525, 40250), (575, 36750), (625, 33810), (690, 30625), (735, 28750), (750, 28175), (805, 26250), (875, 24150), (966, 21875), (1050, 20125), (1127, 18750), (1150, 18375), (1225, 17250), (1250, 16905), (1470, 14375), (1610, 13125), (1725, 12250), (1750, 12075), (1875, 11270), (2254, 9375), (2415, 8750), (2450, 8625), (2625, 8050), (2875, 7350), (3125, 6762), (3381, 6250), (3450, 6125), (3675, 5750), (3750, 5635), (4025, 5250), (4375, 4830)]