21393750

素因数分解:

$2^1\times 3^1\times 5^5\times 7^1\times {\mathrm{163}}^1$

素因数の和:200

約数の個数: 96

約数和(自身を含む): 61496064

約数和(自身を除く): 40102314

約数列:

[1, 2, 3, 5, 6, 7, 10, 14, 15, 21, 25, 30, 35, 42, 50, 70, 75, 105, 125, 150, 163, 175, 210, 250, 326, 350, 375, 489, 525, 625, 750, 815, 875, 978, 1050, 1141, 1250, 1630, 1750, 1875, 2282, 2445, 2625, 3125, 3423, 3750, 4075, 4375, 4890, 5250, 5705, 6250, 6846, 8150, 8750, 9375, 11410, 12225, 13125, 17115, 18750, 20375, 21875, 24450, 26250, 28525, 34230, 40750, 43750, 57050, 61125, 65625, 85575, 101875, 122250, 131250, 142625, 171150, 203750, 285250, 305625, 427875, 509375, 611250, 713125, 855750, 1018750, 1426250, 1528125, 2139375, 3056250, 3565625, 4278750, 7131250, 10696875, 21393750]

約数ペア:

[(1, 21393750), (2, 10696875), (3, 7131250), (5, 4278750), (6, 3565625), (7, 3056250), (10, 2139375), (14, 1528125), (15, 1426250), (21, 1018750), (25, 855750), (30, 713125), (35, 611250), (42, 509375), (50, 427875), (70, 305625), (75, 285250), (105, 203750), (125, 171150), (150, 142625), (163, 131250), (175, 122250), (210, 101875), (250, 85575), (326, 65625), (350, 61125), (375, 57050), (489, 43750), (525, 40750), (625, 34230), (750, 28525), (815, 26250), (875, 24450), (978, 21875), (1050, 20375), (1141, 18750), (1250, 17115), (1630, 13125), (1750, 12225), (1875, 11410), (2282, 9375), (2445, 8750), (2625, 8150), (3125, 6846), (3423, 6250), (3750, 5705), (4075, 5250), (4375, 4890)]