20484180

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{3671}}^1$

素因数の和:3717

約数の個数: 72

約数和(自身を含む): 64157184

約数和(自身を除く): 43673004

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 31, 36, 45, 60, 62, 90, 93, 124, 155, 180, 186, 279, 310, 372, 465, 558, 620, 930, 1116, 1395, 1860, 2790, 3671, 5580, 7342, 11013, 14684, 18355, 22026, 33039, 36710, 44052, 55065, 66078, 73420, 110130, 113801, 132156, 165195, 220260, 227602, 330390, 341403, 455204, 569005, 660780, 682806, 1024209, 1138010, 1365612, 1707015, 2048418, 2276020, 3414030, 4096836, 5121045, 6828060, 10242090, 20484180]

約数ペア:

[(1, 20484180), (2, 10242090), (3, 6828060), (4, 5121045), (5, 4096836), (6, 3414030), (9, 2276020), (10, 2048418), (12, 1707015), (15, 1365612), (18, 1138010), (20, 1024209), (30, 682806), (31, 660780), (36, 569005), (45, 455204), (60, 341403), (62, 330390), (90, 227602), (93, 220260), (124, 165195), (155, 132156), (180, 113801), (186, 110130), (279, 73420), (310, 66078), (372, 55065), (465, 44052), (558, 36710), (620, 33039), (930, 22026), (1116, 18355), (1395, 14684), (1860, 11013), (2790, 7342), (3671, 5580)]