311904640

素因数分解:

$2^7\times 5^1\times {\mathrm{31}}^1\times {\mathrm{79}}^1\times {\mathrm{199}}^1$

素因数の和:328

約数の個数: 128

約数和(自身を含む): 783360000

約数和(自身を除く): 471455360

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 32, 40, 62, 64, 79, 80, 124, 128, 155, 158, 160, 199, 248, 310, 316, 320, 395, 398, 496, 620, 632, 640, 790, 796, 992, 995, 1240, 1264, 1580, 1592, 1984, 1990, 2449, 2480, 2528, 3160, 3184, 3968, 3980, 4898, 4960, 5056, 6169, 6320, 6368, 7960, 9796, 9920, 10112, 12245, 12338, 12640, 12736, 15721, 15920, 19592, 19840, 24490, 24676, 25280, 25472, 30845, 31442, 31840, 39184, 48980, 49352, 50560, 61690, 62884, 63680, 78368, 78605, 97960, 98704, 123380, 125768, 127360, 156736, 157210, 195920, 197408, 246760, 251536, 313472, 314420, 391840, 394816, 487351, 493520, 503072, 628840, 783680, 789632, 974702, 987040, 1006144, 1257680, 1567360, 1949404, 1974080, 2012288, 2436755, 2515360, 3898808, 3948160, 4873510, 5030720, 7797616, 9747020, 10061440, 15595232, 19494040, 31190464, 38988080, 62380928, 77976160, 155952320, 311904640]

約数ペア:

[(1, 311904640), (2, 155952320), (4, 77976160), (5, 62380928), (8, 38988080), (10, 31190464), (16, 19494040), (20, 15595232), (31, 10061440), (32, 9747020), (40, 7797616), (62, 5030720), (64, 4873510), (79, 3948160), (80, 3898808), (124, 2515360), (128, 2436755), (155, 2012288), (158, 1974080), (160, 1949404), (199, 1567360), (248, 1257680), (310, 1006144), (316, 987040), (320, 974702), (395, 789632), (398, 783680), (496, 628840), (620, 503072), (632, 493520), (640, 487351), (790, 394816), (796, 391840), (992, 314420), (995, 313472), (1240, 251536), (1264, 246760), (1580, 197408), (1592, 195920), (1984, 157210), (1990, 156736), (2449, 127360), (2480, 125768), (2528, 123380), (3160, 98704), (3184, 97960), (3968, 78605), (3980, 78368), (4898, 63680), (4960, 62884), (5056, 61690), (6169, 50560), (6320, 49352), (6368, 48980), (7960, 39184), (9796, 31840), (9920, 31442), (10112, 30845), (12245, 25472), (12338, 25280), (12640, 24676), (12736, 24490), (15721, 19840), (15920, 19592)]