39381680

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{1993}}^1$

素因数の和:2038

約数の個数: 80

約数和(自身を含む): 103847520

約数和(自身を除く): 64465840

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 19, 20, 26, 38, 40, 52, 65, 76, 80, 95, 104, 130, 152, 190, 208, 247, 260, 304, 380, 494, 520, 760, 988, 1040, 1235, 1520, 1976, 1993, 2470, 3952, 3986, 4940, 7972, 9880, 9965, 15944, 19760, 19930, 25909, 31888, 37867, 39860, 51818, 75734, 79720, 103636, 129545, 151468, 159440, 189335, 207272, 259090, 302936, 378670, 414544, 492271, 518180, 605872, 757340, 984542, 1036360, 1514680, 1969084, 2072720, 2461355, 3029360, 3938168, 4922710, 7876336, 9845420, 19690840, 39381680]

約数ペア:

[(1, 39381680), (2, 19690840), (4, 9845420), (5, 7876336), (8, 4922710), (10, 3938168), (13, 3029360), (16, 2461355), (19, 2072720), (20, 1969084), (26, 1514680), (38, 1036360), (40, 984542), (52, 757340), (65, 605872), (76, 518180), (80, 492271), (95, 414544), (104, 378670), (130, 302936), (152, 259090), (190, 207272), (208, 189335), (247, 159440), (260, 151468), (304, 129545), (380, 103636), (494, 79720), (520, 75734), (760, 51818), (988, 39860), (1040, 37867), (1235, 31888), (1520, 25909), (1976, 19930), (1993, 19760), (2470, 15944), (3952, 9965), (3986, 9880), (4940, 7972)]