21059250

素因数分解:

$2^1\times 3^1\times 5^3\times {\mathrm{43}}^1\times {\mathrm{653}}^1$

素因数の和:716

約数の個数: 64

約数和(自身を含む): 53868672

約数和(自身を除く): 32809422

約数列:

[1, 2, 3, 5, 6, 10, 15, 25, 30, 43, 50, 75, 86, 125, 129, 150, 215, 250, 258, 375, 430, 645, 653, 750, 1075, 1290, 1306, 1959, 2150, 3225, 3265, 3918, 5375, 6450, 6530, 9795, 10750, 16125, 16325, 19590, 28079, 32250, 32650, 48975, 56158, 81625, 84237, 97950, 140395, 163250, 168474, 244875, 280790, 421185, 489750, 701975, 842370, 1403950, 2105925, 3509875, 4211850, 7019750, 10529625, 21059250]

約数ペア:

[(1, 21059250), (2, 10529625), (3, 7019750), (5, 4211850), (6, 3509875), (10, 2105925), (15, 1403950), (25, 842370), (30, 701975), (43, 489750), (50, 421185), (75, 280790), (86, 244875), (125, 168474), (129, 163250), (150, 140395), (215, 97950), (250, 84237), (258, 81625), (375, 56158), (430, 48975), (645, 32650), (653, 32250), (750, 28079), (1075, 19590), (1290, 16325), (1306, 16125), (1959, 10750), (2150, 9795), (3225, 6530), (3265, 6450), (3918, 5375)]