20269960

素因数分解:

$2^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{149}}^1\times {\mathrm{179}}^1$

素因数の和:358

約数の個数: 64

約数和(自身を含む): 48600000

約数和(自身を除く): 28330040

約数列:

[1, 2, 4, 5, 8, 10, 19, 20, 38, 40, 76, 95, 149, 152, 179, 190, 298, 358, 380, 596, 716, 745, 760, 895, 1192, 1432, 1490, 1790, 2831, 2980, 3401, 3580, 5662, 5960, 6802, 7160, 11324, 13604, 14155, 17005, 22648, 26671, 27208, 28310, 34010, 53342, 56620, 68020, 106684, 113240, 133355, 136040, 213368, 266710, 506749, 533420, 1013498, 1066840, 2026996, 2533745, 4053992, 5067490, 10134980, 20269960]

約数ペア:

[(1, 20269960), (2, 10134980), (4, 5067490), (5, 4053992), (8, 2533745), (10, 2026996), (19, 1066840), (20, 1013498), (38, 533420), (40, 506749), (76, 266710), (95, 213368), (149, 136040), (152, 133355), (179, 113240), (190, 106684), (298, 68020), (358, 56620), (380, 53342), (596, 34010), (716, 28310), (745, 27208), (760, 26671), (895, 22648), (1192, 17005), (1432, 14155), (1490, 13604), (1790, 11324), (2831, 7160), (2980, 6802), (3401, 5960), (3580, 5662)]