1680604240

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{131}}^1\times {\mathrm{739}}^1$

素因数の和:921

約数の個数: 160

約数和(自身を含む): 4651130880

約数和(自身を除く): 2970526640

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 31, 35, 40, 56, 62, 70, 80, 112, 124, 131, 140, 155, 217, 248, 262, 280, 310, 434, 496, 524, 560, 620, 655, 739, 868, 917, 1048, 1085, 1240, 1310, 1478, 1736, 1834, 2096, 2170, 2480, 2620, 2956, 3472, 3668, 3695, 4061, 4340, 4585, 5173, 5240, 5912, 7336, 7390, 8122, 8680, 9170, 10346, 10480, 11824, 14672, 14780, 16244, 17360, 18340, 20305, 20692, 22909, 25865, 28427, 29560, 32488, 36680, 40610, 41384, 45818, 51730, 56854, 59120, 64976, 73360, 81220, 82768, 91636, 96809, 103460, 113708, 114545, 142135, 160363, 162440, 183272, 193618, 206920, 227416, 229090, 284270, 320726, 324880, 366544, 387236, 413840, 454832, 458180, 484045, 568540, 641452, 677663, 774472, 801815, 916360, 968090, 1137080, 1282904, 1355326, 1548944, 1603630, 1832720, 1936180, 2274160, 2565808, 2710652, 3001079, 3207260, 3388315, 3872360, 5421304, 6002158, 6414520, 6776630, 7744720, 10842608, 12004316, 12829040, 13553260, 15005395, 21007553, 24008632, 27106520, 30010790, 42015106, 48017264, 54213040, 60021580, 84030212, 105037765, 120043160, 168060424, 210075530, 240086320, 336120848, 420151060, 840302120, 1680604240]

約数ペア:

[(1, 1680604240), (2, 840302120), (4, 420151060), (5, 336120848), (7, 240086320), (8, 210075530), (10, 168060424), (14, 120043160), (16, 105037765), (20, 84030212), (28, 60021580), (31, 54213040), (35, 48017264), (40, 42015106), (56, 30010790), (62, 27106520), (70, 24008632), (80, 21007553), (112, 15005395), (124, 13553260), (131, 12829040), (140, 12004316), (155, 10842608), (217, 7744720), (248, 6776630), (262, 6414520), (280, 6002158), (310, 5421304), (434, 3872360), (496, 3388315), (524, 3207260), (560, 3001079), (620, 2710652), (655, 2565808), (739, 2274160), (868, 1936180), (917, 1832720), (1048, 1603630), (1085, 1548944), (1240, 1355326), (1310, 1282904), (1478, 1137080), (1736, 968090), (1834, 916360), (2096, 801815), (2170, 774472), (2480, 677663), (2620, 641452), (2956, 568540), (3472, 484045), (3668, 458180), (3695, 454832), (4061, 413840), (4340, 387236), (4585, 366544), (5173, 324880), (5240, 320726), (5912, 284270), (7336, 229090), (7390, 227416), (8122, 206920), (8680, 193618), (9170, 183272), (10346, 162440), (10480, 160363), (11824, 142135), (14672, 114545), (14780, 113708), (16244, 103460), (17360, 96809), (18340, 91636), (20305, 82768), (20692, 81220), (22909, 73360), (25865, 64976), (28427, 59120), (29560, 56854), (32488, 51730), (36680, 45818), (40610, 41384)]