15817880

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{1601}}^1$

素因数の和:1644

約数の個数: 64

約数和(自身を含む): 40370400

約数和(自身を除く): 24552520

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, 1601, 1976, 2470, 3202, 4940, 6404, 8005, 9880, 12808, 16010, 20813, 30419, 32020, 41626, 60838, 64040, 83252, 104065, 121676, 152095, 166504, 208130, 243352, 304190, 395447, 416260, 608380, 790894, 832520, 1216760, 1581788, 1977235, 3163576, 3954470, 7908940, 15817880]

約数ペア:

[(1, 15817880), (2, 7908940), (4, 3954470), (5, 3163576), (8, 1977235), (10, 1581788), (13, 1216760), (19, 832520), (20, 790894), (26, 608380), (38, 416260), (40, 395447), (52, 304190), (65, 243352), (76, 208130), (95, 166504), (104, 152095), (130, 121676), (152, 104065), (190, 83252), (247, 64040), (260, 60838), (380, 41626), (494, 32020), (520, 30419), (760, 20813), (988, 16010), (1235, 12808), (1601, 9880), (1976, 8005), (2470, 6404), (3202, 4940)]