40125680

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{79}}^1\times {\mathrm{907}}^1$

素因数の和:1006

約数の個数: 80

約数和(自身を含む): 108088320

約数和(自身を除く): 67962640

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 56, 70, 79, 80, 112, 140, 158, 280, 316, 395, 553, 560, 632, 790, 907, 1106, 1264, 1580, 1814, 2212, 2765, 3160, 3628, 4424, 4535, 5530, 6320, 6349, 7256, 8848, 9070, 11060, 12698, 14512, 18140, 22120, 25396, 31745, 36280, 44240, 50792, 63490, 71653, 72560, 101584, 126980, 143306, 253960, 286612, 358265, 501571, 507920, 573224, 716530, 1003142, 1146448, 1433060, 2006284, 2507855, 2866120, 4012568, 5015710, 5732240, 8025136, 10031420, 20062840, 40125680]

約数ペア:

[(1, 40125680), (2, 20062840), (4, 10031420), (5, 8025136), (7, 5732240), (8, 5015710), (10, 4012568), (14, 2866120), (16, 2507855), (20, 2006284), (28, 1433060), (35, 1146448), (40, 1003142), (56, 716530), (70, 573224), (79, 507920), (80, 501571), (112, 358265), (140, 286612), (158, 253960), (280, 143306), (316, 126980), (395, 101584), (553, 72560), (560, 71653), (632, 63490), (790, 50792), (907, 44240), (1106, 36280), (1264, 31745), (1580, 25396), (1814, 22120), (2212, 18140), (2765, 14512), (3160, 12698), (3628, 11060), (4424, 9070), (4535, 8848), (5530, 7256), (6320, 6349)]