123873520

素因数分解:

$2^4\times 5^1\times {\mathrm{31}}^1\times {\mathrm{199}}^1\times {\mathrm{251}}^1$

素因数の和:494

約数の個数: 80

約数和(自身を含む): 299980800

約数和(自身を除く): 176107280

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 40, 62, 80, 124, 155, 199, 248, 251, 310, 398, 496, 502, 620, 796, 995, 1004, 1240, 1255, 1592, 1990, 2008, 2480, 2510, 3184, 3980, 4016, 5020, 6169, 7781, 7960, 10040, 12338, 15562, 15920, 20080, 24676, 30845, 31124, 38905, 49352, 49949, 61690, 62248, 77810, 98704, 99898, 123380, 124496, 155620, 199796, 246760, 249745, 311240, 399592, 493520, 499490, 622480, 799184, 998980, 1548419, 1997960, 3096838, 3995920, 6193676, 7742095, 12387352, 15484190, 24774704, 30968380, 61936760, 123873520]

約数ペア:

[(1, 123873520), (2, 61936760), (4, 30968380), (5, 24774704), (8, 15484190), (10, 12387352), (16, 7742095), (20, 6193676), (31, 3995920), (40, 3096838), (62, 1997960), (80, 1548419), (124, 998980), (155, 799184), (199, 622480), (248, 499490), (251, 493520), (310, 399592), (398, 311240), (496, 249745), (502, 246760), (620, 199796), (796, 155620), (995, 124496), (1004, 123380), (1240, 99898), (1255, 98704), (1592, 77810), (1990, 62248), (2008, 61690), (2480, 49949), (2510, 49352), (3184, 38905), (3980, 31124), (4016, 30845), (5020, 24676), (6169, 20080), (7781, 15920), (7960, 15562), (10040, 12338)]