20942560

素因数分解:

$2^5\times 5^1\times {\mathrm{19}}^1\times {\mathrm{83}}^2$

素因数の和:200

約数の個数: 72

約数和(自身を含む): 52715880

約数和(自身を除く): 31773320

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 32, 38, 40, 76, 80, 83, 95, 152, 160, 166, 190, 304, 332, 380, 415, 608, 664, 760, 830, 1328, 1520, 1577, 1660, 2656, 3040, 3154, 3320, 6308, 6640, 6889, 7885, 12616, 13280, 13778, 15770, 25232, 27556, 31540, 34445, 50464, 55112, 63080, 68890, 110224, 126160, 130891, 137780, 220448, 252320, 261782, 275560, 523564, 551120, 654455, 1047128, 1102240, 1308910, 2094256, 2617820, 4188512, 5235640, 10471280, 20942560]

約数ペア:

[(1, 20942560), (2, 10471280), (4, 5235640), (5, 4188512), (8, 2617820), (10, 2094256), (16, 1308910), (19, 1102240), (20, 1047128), (32, 654455), (38, 551120), (40, 523564), (76, 275560), (80, 261782), (83, 252320), (95, 220448), (152, 137780), (160, 130891), (166, 126160), (190, 110224), (304, 68890), (332, 63080), (380, 55112), (415, 50464), (608, 34445), (664, 31540), (760, 27556), (830, 25232), (1328, 15770), (1520, 13778), (1577, 13280), (1660, 12616), (2656, 7885), (3040, 6889), (3154, 6640), (3320, 6308)]