81430960

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^2\times {\mathrm{19}}^1\times {\mathrm{317}}^1$

素因数の和:375

約数の個数: 120

約数和(自身を含む): 216481680

約数和(自身を除く): 135050720

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 19, 20, 26, 38, 40, 52, 65, 76, 80, 95, 104, 130, 152, 169, 190, 208, 247, 260, 304, 317, 338, 380, 494, 520, 634, 676, 760, 845, 988, 1040, 1235, 1268, 1352, 1520, 1585, 1690, 1976, 2470, 2536, 2704, 3170, 3211, 3380, 3952, 4121, 4940, 5072, 6023, 6340, 6422, 6760, 8242, 9880, 12046, 12680, 12844, 13520, 16055, 16484, 19760, 20605, 24092, 25360, 25688, 30115, 32110, 32968, 41210, 48184, 51376, 53573, 60230, 64220, 65936, 78299, 82420, 96368, 107146, 120460, 128440, 156598, 164840, 214292, 240920, 256880, 267865, 313196, 329680, 391495, 428584, 481840, 535730, 626392, 782990, 857168, 1017887, 1071460, 1252784, 1565980, 2035774, 2142920, 3131960, 4071548, 4285840, 5089435, 6263920, 8143096, 10178870, 16286192, 20357740, 40715480, 81430960]

約数ペア:

[(1, 81430960), (2, 40715480), (4, 20357740), (5, 16286192), (8, 10178870), (10, 8143096), (13, 6263920), (16, 5089435), (19, 4285840), (20, 4071548), (26, 3131960), (38, 2142920), (40, 2035774), (52, 1565980), (65, 1252784), (76, 1071460), (80, 1017887), (95, 857168), (104, 782990), (130, 626392), (152, 535730), (169, 481840), (190, 428584), (208, 391495), (247, 329680), (260, 313196), (304, 267865), (317, 256880), (338, 240920), (380, 214292), (494, 164840), (520, 156598), (634, 128440), (676, 120460), (760, 107146), (845, 96368), (988, 82420), (1040, 78299), (1235, 65936), (1268, 64220), (1352, 60230), (1520, 53573), (1585, 51376), (1690, 48184), (1976, 41210), (2470, 32968), (2536, 32110), (2704, 30115), (3170, 25688), (3211, 25360), (3380, 24092), (3952, 20605), (4121, 19760), (4940, 16484), (5072, 16055), (6023, 13520), (6340, 12844), (6422, 12680), (6760, 12046), (8242, 9880)]