638702920

素因数分解:

$2^3\times 5^1\times {\mathrm{17}}^1\times {\mathrm{31}}^1\times {\mathrm{41}}^1\times {\mathrm{739}}^1$

素因数の和:839

約数の個数: 128

約数和(自身を含む): 1611187200

約数和(自身を除く): 972484280

約数列:

[1, 2, 4, 5, 8, 10, 17, 20, 31, 34, 40, 41, 62, 68, 82, 85, 124, 136, 155, 164, 170, 205, 248, 310, 328, 340, 410, 527, 620, 680, 697, 739, 820, 1054, 1240, 1271, 1394, 1478, 1640, 2108, 2542, 2635, 2788, 2956, 3485, 3695, 4216, 5084, 5270, 5576, 5912, 6355, 6970, 7390, 10168, 10540, 12563, 12710, 13940, 14780, 21080, 21607, 22909, 25126, 25420, 27880, 29560, 30299, 43214, 45818, 50252, 50840, 60598, 62815, 86428, 91636, 100504, 108035, 114545, 121196, 125630, 151495, 172856, 183272, 216070, 229090, 242392, 251260, 302990, 389453, 432140, 458180, 502520, 515083, 605980, 778906, 864280, 916360, 939269, 1030166, 1211960, 1557812, 1878538, 1947265, 2060332, 2575415, 3115624, 3757076, 3894530, 4120664, 4696345, 5150830, 7514152, 7789060, 9392690, 10301660, 15578120, 15967573, 18785380, 20603320, 31935146, 37570760, 63870292, 79837865, 127740584, 159675730, 319351460, 638702920]

約数ペア:

[(1, 638702920), (2, 319351460), (4, 159675730), (5, 127740584), (8, 79837865), (10, 63870292), (17, 37570760), (20, 31935146), (31, 20603320), (34, 18785380), (40, 15967573), (41, 15578120), (62, 10301660), (68, 9392690), (82, 7789060), (85, 7514152), (124, 5150830), (136, 4696345), (155, 4120664), (164, 3894530), (170, 3757076), (205, 3115624), (248, 2575415), (310, 2060332), (328, 1947265), (340, 1878538), (410, 1557812), (527, 1211960), (620, 1030166), (680, 939269), (697, 916360), (739, 864280), (820, 778906), (1054, 605980), (1240, 515083), (1271, 502520), (1394, 458180), (1478, 432140), (1640, 389453), (2108, 302990), (2542, 251260), (2635, 242392), (2788, 229090), (2956, 216070), (3485, 183272), (3695, 172856), (4216, 151495), (5084, 125630), (5270, 121196), (5576, 114545), (5912, 108035), (6355, 100504), (6970, 91636), (7390, 86428), (10168, 62815), (10540, 60598), (12563, 50840), (12710, 50252), (13940, 45818), (14780, 43214), (21080, 30299), (21607, 29560), (22909, 27880), (25126, 25420)]