81627960

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{31}}^1\times {\mathrm{21943}}^1$

素因数の和:21988

約数の個数: 64

約数和(自身を含む): 252794880

約数和(自身を除く): 171166920

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 31, 40, 60, 62, 93, 120, 124, 155, 186, 248, 310, 372, 465, 620, 744, 930, 1240, 1860, 3720, 21943, 43886, 65829, 87772, 109715, 131658, 175544, 219430, 263316, 329145, 438860, 526632, 658290, 680233, 877720, 1316580, 1360466, 2040699, 2633160, 2720932, 3401165, 4081398, 5441864, 6802330, 8162796, 10203495, 13604660, 16325592, 20406990, 27209320, 40813980, 81627960]

約数ペア:

[(1, 81627960), (2, 40813980), (3, 27209320), (4, 20406990), (5, 16325592), (6, 13604660), (8, 10203495), (10, 8162796), (12, 6802330), (15, 5441864), (20, 4081398), (24, 3401165), (30, 2720932), (31, 2633160), (40, 2040699), (60, 1360466), (62, 1316580), (93, 877720), (120, 680233), (124, 658290), (155, 526632), (186, 438860), (248, 329145), (310, 263316), (372, 219430), (465, 175544), (620, 131658), (744, 109715), (930, 87772), (1240, 65829), (1860, 43886), (3720, 21943)]