89700980

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{149}}^1\times {\mathrm{971}}^1$

素因数の和:1160

約数の個数: 48

約数和(自身を含む): 195955200

約数和(自身を除く): 106254220

約数列:

[1, 2, 4, 5, 10, 20, 31, 62, 124, 149, 155, 298, 310, 596, 620, 745, 971, 1490, 1942, 2980, 3884, 4619, 4855, 9238, 9710, 18476, 19420, 23095, 30101, 46190, 60202, 92380, 120404, 144679, 150505, 289358, 301010, 578716, 602020, 723395, 1446790, 2893580, 4485049, 8970098, 17940196, 22425245, 44850490, 89700980]

約数ペア:

[(1, 89700980), (2, 44850490), (4, 22425245), (5, 17940196), (10, 8970098), (20, 4485049), (31, 2893580), (62, 1446790), (124, 723395), (149, 602020), (155, 578716), (298, 301010), (310, 289358), (596, 150505), (620, 144679), (745, 120404), (971, 92380), (1490, 60202), (1942, 46190), (2980, 30101), (3884, 23095), (4619, 19420), (4855, 18476), (9238, 9710)]