19690840

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{1993}}^1$

素因数の和:2036

約数の個数: 64

約数和(自身を含む): 50248800

約数和(自身を除く): 30557960

約数列:

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

約数ペア:

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