3981640

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^2\times {\mathrm{19}}^1\times {\mathrm{31}}^1$

素因数の和:87

約数の個数: 96

約数和(自身を含む): 10540800

約数和(自身を除く): 6559160

約数列:

[1, 2, 4, 5, 8, 10, 13, 19, 20, 26, 31, 38, 40, 52, 62, 65, 76, 95, 104, 124, 130, 152, 155, 169, 190, 247, 248, 260, 310, 338, 380, 403, 494, 520, 589, 620, 676, 760, 806, 845, 988, 1178, 1235, 1240, 1352, 1612, 1690, 1976, 2015, 2356, 2470, 2945, 3211, 3224, 3380, 4030, 4712, 4940, 5239, 5890, 6422, 6760, 7657, 8060, 9880, 10478, 11780, 12844, 15314, 16055, 16120, 20956, 23560, 25688, 26195, 30628, 32110, 38285, 41912, 52390, 61256, 64220, 76570, 99541, 104780, 128440, 153140, 199082, 209560, 306280, 398164, 497705, 796328, 995410, 1990820, 3981640]

約数ペア:

[(1, 3981640), (2, 1990820), (4, 995410), (5, 796328), (8, 497705), (10, 398164), (13, 306280), (19, 209560), (20, 199082), (26, 153140), (31, 128440), (38, 104780), (40, 99541), (52, 76570), (62, 64220), (65, 61256), (76, 52390), (95, 41912), (104, 38285), (124, 32110), (130, 30628), (152, 26195), (155, 25688), (169, 23560), (190, 20956), (247, 16120), (248, 16055), (260, 15314), (310, 12844), (338, 11780), (380, 10478), (403, 9880), (494, 8060), (520, 7657), (589, 6760), (620, 6422), (676, 5890), (760, 5239), (806, 4940), (845, 4712), (988, 4030), (1178, 3380), (1235, 3224), (1240, 3211), (1352, 2945), (1612, 2470), (1690, 2356), (1976, 2015)]