221341640

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{43}}^1\times {\mathrm{521}}^1$

素因数の和:607

約数の個数: 128

約数和(自身を含む): 578793600

約数和(自身を除く): 357451960

約数列:

[1, 2, 4, 5, 8, 10, 13, 19, 20, 26, 38, 40, 43, 52, 65, 76, 86, 95, 104, 130, 152, 172, 190, 215, 247, 260, 344, 380, 430, 494, 520, 521, 559, 760, 817, 860, 988, 1042, 1118, 1235, 1634, 1720, 1976, 2084, 2236, 2470, 2605, 2795, 3268, 4085, 4168, 4472, 4940, 5210, 5590, 6536, 6773, 8170, 9880, 9899, 10420, 10621, 11180, 13546, 16340, 19798, 20840, 21242, 22360, 22403, 27092, 32680, 33865, 39596, 42484, 44806, 49495, 53105, 54184, 67730, 79192, 84968, 89612, 98990, 106210, 112015, 128687, 135460, 179224, 197980, 212420, 224030, 257374, 270920, 291239, 395960, 424840, 425657, 448060, 514748, 582478, 643435, 851314, 896120, 1029496, 1164956, 1286870, 1456195, 1702628, 2128285, 2329912, 2573740, 2912390, 3405256, 4256570, 5147480, 5533541, 5824780, 8513140, 11067082, 11649560, 17026280, 22134164, 27667705, 44268328, 55335410, 110670820, 221341640]

約数ペア:

[(1, 221341640), (2, 110670820), (4, 55335410), (5, 44268328), (8, 27667705), (10, 22134164), (13, 17026280), (19, 11649560), (20, 11067082), (26, 8513140), (38, 5824780), (40, 5533541), (43, 5147480), (52, 4256570), (65, 3405256), (76, 2912390), (86, 2573740), (95, 2329912), (104, 2128285), (130, 1702628), (152, 1456195), (172, 1286870), (190, 1164956), (215, 1029496), (247, 896120), (260, 851314), (344, 643435), (380, 582478), (430, 514748), (494, 448060), (520, 425657), (521, 424840), (559, 395960), (760, 291239), (817, 270920), (860, 257374), (988, 224030), (1042, 212420), (1118, 197980), (1235, 179224), (1634, 135460), (1720, 128687), (1976, 112015), (2084, 106210), (2236, 98990), (2470, 89612), (2605, 84968), (2795, 79192), (3268, 67730), (4085, 54184), (4168, 53105), (4472, 49495), (4940, 44806), (5210, 42484), (5590, 39596), (6536, 33865), (6773, 32680), (8170, 27092), (9880, 22403), (9899, 22360), (10420, 21242), (10621, 20840), (11180, 19798), (13546, 16340)]