19908133040

素因数分解:

$2^4\times 5^1\times {\mathrm{31}}^1\times {\mathrm{71}}^1\times {\mathrm{113063}}^1$

素因数の和:113178

約数の個数: 80

約数和(自身を含む): 48452898816

約数和(自身を除く): 28544765776

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 40, 62, 71, 80, 124, 142, 155, 248, 284, 310, 355, 496, 568, 620, 710, 1136, 1240, 1420, 2201, 2480, 2840, 4402, 5680, 8804, 11005, 17608, 22010, 35216, 44020, 88040, 113063, 176080, 226126, 452252, 565315, 904504, 1130630, 1809008, 2261260, 3504953, 4522520, 7009906, 8027473, 9045040, 14019812, 16054946, 17524765, 28039624, 32109892, 35049530, 40137365, 56079248, 64219784, 70099060, 80274730, 128439568, 140198120, 160549460, 248851663, 280396240, 321098920, 497703326, 642197840, 995406652, 1244258315, 1990813304, 2488516630, 3981626608, 4977033260, 9954066520, 19908133040]

約数ペア:

[(1, 19908133040), (2, 9954066520), (4, 4977033260), (5, 3981626608), (8, 2488516630), (10, 1990813304), (16, 1244258315), (20, 995406652), (31, 642197840), (40, 497703326), (62, 321098920), (71, 280396240), (80, 248851663), (124, 160549460), (142, 140198120), (155, 128439568), (248, 80274730), (284, 70099060), (310, 64219784), (355, 56079248), (496, 40137365), (568, 35049530), (620, 32109892), (710, 28039624), (1136, 17524765), (1240, 16054946), (1420, 14019812), (2201, 9045040), (2480, 8027473), (2840, 7009906), (4402, 4522520), (5680, 3504953), (8804, 2261260), (11005, 1809008), (17608, 1130630), (22010, 904504), (35216, 565315), (44020, 452252), (88040, 226126), (113063, 176080)]