40539920

素因数分解:

$2^4\times 5^1\times {\mathrm{19}}^1\times {\mathrm{149}}^1\times {\mathrm{179}}^1$

素因数の和:360

約数の個数: 80

約数和(自身を含む): 100440000

約数和(自身を除く): 59900080

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 38, 40, 76, 80, 95, 149, 152, 179, 190, 298, 304, 358, 380, 596, 716, 745, 760, 895, 1192, 1432, 1490, 1520, 1790, 2384, 2831, 2864, 2980, 3401, 3580, 5662, 5960, 6802, 7160, 11324, 11920, 13604, 14155, 14320, 17005, 22648, 26671, 27208, 28310, 34010, 45296, 53342, 54416, 56620, 68020, 106684, 113240, 133355, 136040, 213368, 226480, 266710, 272080, 426736, 506749, 533420, 1013498, 1066840, 2026996, 2133680, 2533745, 4053992, 5067490, 8107984, 10134980, 20269960, 40539920]

約数ペア:

[(1, 40539920), (2, 20269960), (4, 10134980), (5, 8107984), (8, 5067490), (10, 4053992), (16, 2533745), (19, 2133680), (20, 2026996), (38, 1066840), (40, 1013498), (76, 533420), (80, 506749), (95, 426736), (149, 272080), (152, 266710), (179, 226480), (190, 213368), (298, 136040), (304, 133355), (358, 113240), (380, 106684), (596, 68020), (716, 56620), (745, 54416), (760, 53342), (895, 45296), (1192, 34010), (1432, 28310), (1490, 27208), (1520, 26671), (1790, 22648), (2384, 17005), (2831, 14320), (2864, 14155), (2980, 13604), (3401, 11920), (3580, 11324), (5662, 7160), (5960, 6802)]