20403500

素因数分解:

$2^2\times 5^3\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{73}}^1$

素因数の和:148

約数の個数: 96

約数和(自身を含む): 49777728

約数和(自身を除く): 29374228

約数列:

[1, 2, 4, 5, 10, 13, 20, 25, 26, 43, 50, 52, 65, 73, 86, 100, 125, 130, 146, 172, 215, 250, 260, 292, 325, 365, 430, 500, 559, 650, 730, 860, 949, 1075, 1118, 1300, 1460, 1625, 1825, 1898, 2150, 2236, 2795, 3139, 3250, 3650, 3796, 4300, 4745, 5375, 5590, 6278, 6500, 7300, 9125, 9490, 10750, 11180, 12556, 13975, 15695, 18250, 18980, 21500, 23725, 27950, 31390, 36500, 40807, 47450, 55900, 62780, 69875, 78475, 81614, 94900, 118625, 139750, 156950, 163228, 204035, 237250, 279500, 313900, 392375, 408070, 474500, 784750, 816140, 1020175, 1569500, 2040350, 4080700, 5100875, 10201750, 20403500]

約数ペア:

[(1, 20403500), (2, 10201750), (4, 5100875), (5, 4080700), (10, 2040350), (13, 1569500), (20, 1020175), (25, 816140), (26, 784750), (43, 474500), (50, 408070), (52, 392375), (65, 313900), (73, 279500), (86, 237250), (100, 204035), (125, 163228), (130, 156950), (146, 139750), (172, 118625), (215, 94900), (250, 81614), (260, 78475), (292, 69875), (325, 62780), (365, 55900), (430, 47450), (500, 40807), (559, 36500), (650, 31390), (730, 27950), (860, 23725), (949, 21500), (1075, 18980), (1118, 18250), (1300, 15695), (1460, 13975), (1625, 12556), (1825, 11180), (1898, 10750), (2150, 9490), (2236, 9125), (2795, 7300), (3139, 6500), (3250, 6278), (3650, 5590), (3796, 5375), (4300, 4745)]