78620960

素因数分解:

$2^5\times 5^1\times {\mathrm{11}}^2\times {\mathrm{31}}^1\times {\mathrm{131}}^1$

素因数の和:199

約数の個数: 144

約数和(自身を含む): 212357376

約数和(自身を除く): 133736416

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 31, 32, 40, 44, 55, 62, 80, 88, 110, 121, 124, 131, 155, 160, 176, 220, 242, 248, 262, 310, 341, 352, 440, 484, 496, 524, 605, 620, 655, 682, 880, 968, 992, 1048, 1210, 1240, 1310, 1364, 1441, 1705, 1760, 1936, 2096, 2420, 2480, 2620, 2728, 2882, 3410, 3751, 3872, 4061, 4192, 4840, 4960, 5240, 5456, 5764, 6820, 7205, 7502, 8122, 9680, 10480, 10912, 11528, 13640, 14410, 15004, 15851, 16244, 18755, 19360, 20305, 20960, 23056, 27280, 28820, 30008, 31702, 32488, 37510, 40610, 44671, 46112, 54560, 57640, 60016, 63404, 64976, 75020, 79255, 81220, 89342, 115280, 120032, 126808, 129952, 150040, 158510, 162440, 178684, 223355, 230560, 253616, 300080, 317020, 324880, 357368, 446710, 491381, 507232, 600160, 634040, 649760, 714736, 893420, 982762, 1268080, 1429472, 1786840, 1965524, 2456905, 2536160, 3573680, 3931048, 4913810, 7147360, 7862096, 9827620, 15724192, 19655240, 39310480, 78620960]

約数ペア:

[(1, 78620960), (2, 39310480), (4, 19655240), (5, 15724192), (8, 9827620), (10, 7862096), (11, 7147360), (16, 4913810), (20, 3931048), (22, 3573680), (31, 2536160), (32, 2456905), (40, 1965524), (44, 1786840), (55, 1429472), (62, 1268080), (80, 982762), (88, 893420), (110, 714736), (121, 649760), (124, 634040), (131, 600160), (155, 507232), (160, 491381), (176, 446710), (220, 357368), (242, 324880), (248, 317020), (262, 300080), (310, 253616), (341, 230560), (352, 223355), (440, 178684), (484, 162440), (496, 158510), (524, 150040), (605, 129952), (620, 126808), (655, 120032), (682, 115280), (880, 89342), (968, 81220), (992, 79255), (1048, 75020), (1210, 64976), (1240, 63404), (1310, 60016), (1364, 57640), (1441, 54560), (1705, 46112), (1760, 44671), (1936, 40610), (2096, 37510), (2420, 32488), (2480, 31702), (2620, 30008), (2728, 28820), (2882, 27280), (3410, 23056), (3751, 20960), (3872, 20305), (4061, 19360), (4192, 18755), (4840, 16244), (4960, 15851), (5240, 15004), (5456, 14410), (5764, 13640), (6820, 11528), (7205, 10912), (7502, 10480), (8122, 9680)]