71755020

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{20981}}^1$

素因数の和:21015

約数の個数: 72

約数和(自身を含む): 229123440

約数和(自身を除く): 157368420

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 19, 20, 30, 36, 38, 45, 57, 60, 76, 90, 95, 114, 171, 180, 190, 228, 285, 342, 380, 570, 684, 855, 1140, 1710, 3420, 20981, 41962, 62943, 83924, 104905, 125886, 188829, 209810, 251772, 314715, 377658, 398639, 419620, 629430, 755316, 797278, 944145, 1195917, 1258860, 1594556, 1888290, 1993195, 2391834, 3587751, 3776580, 3986390, 4783668, 5979585, 7175502, 7972780, 11959170, 14351004, 17938755, 23918340, 35877510, 71755020]

約数ペア:

[(1, 71755020), (2, 35877510), (3, 23918340), (4, 17938755), (5, 14351004), (6, 11959170), (9, 7972780), (10, 7175502), (12, 5979585), (15, 4783668), (18, 3986390), (19, 3776580), (20, 3587751), (30, 2391834), (36, 1993195), (38, 1888290), (45, 1594556), (57, 1258860), (60, 1195917), (76, 944145), (90, 797278), (95, 755316), (114, 629430), (171, 419620), (180, 398639), (190, 377658), (228, 314715), (285, 251772), (342, 209810), (380, 188829), (570, 125886), (684, 104905), (855, 83924), (1140, 62943), (1710, 41962), (3420, 20981)]