81656480

素因数分解:

$2^5\times 5^1\times {\mathrm{31}}^1\times {\mathrm{101}}^1\times {\mathrm{163}}^1$

素因数の和:310

約数の個数: 96

約数和(自身を含む): 202341888

約数和(自身を除く): 120685408

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 32, 40, 62, 80, 101, 124, 155, 160, 163, 202, 248, 310, 326, 404, 496, 505, 620, 652, 808, 815, 992, 1010, 1240, 1304, 1616, 1630, 2020, 2480, 2608, 3131, 3232, 3260, 4040, 4960, 5053, 5216, 6262, 6520, 8080, 10106, 12524, 13040, 15655, 16160, 16463, 20212, 25048, 25265, 26080, 31310, 32926, 40424, 50096, 50530, 62620, 65852, 80848, 82315, 100192, 101060, 125240, 131704, 161696, 164630, 202120, 250480, 263408, 329260, 404240, 500960, 510353, 526816, 658520, 808480, 1020706, 1317040, 2041412, 2551765, 2634080, 4082824, 5103530, 8165648, 10207060, 16331296, 20414120, 40828240, 81656480]

約数ペア:

[(1, 81656480), (2, 40828240), (4, 20414120), (5, 16331296), (8, 10207060), (10, 8165648), (16, 5103530), (20, 4082824), (31, 2634080), (32, 2551765), (40, 2041412), (62, 1317040), (80, 1020706), (101, 808480), (124, 658520), (155, 526816), (160, 510353), (163, 500960), (202, 404240), (248, 329260), (310, 263408), (326, 250480), (404, 202120), (496, 164630), (505, 161696), (620, 131704), (652, 125240), (808, 101060), (815, 100192), (992, 82315), (1010, 80848), (1240, 65852), (1304, 62620), (1616, 50530), (1630, 50096), (2020, 40424), (2480, 32926), (2608, 31310), (3131, 26080), (3232, 25265), (3260, 25048), (4040, 20212), (4960, 16463), (5053, 16160), (5216, 15655), (6262, 13040), (6520, 12524), (8080, 10106)]