21421410

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{71}}^1\times {\mathrm{89}}^1\times {\mathrm{113}}^1$

素因数の和:283

約数の個数: 64

約数和(自身を含む): 53187840

約数和(自身を除く): 31766430

約数列:

[1, 2, 3, 5, 6, 10, 15, 30, 71, 89, 113, 142, 178, 213, 226, 267, 339, 355, 426, 445, 534, 565, 678, 710, 890, 1065, 1130, 1335, 1695, 2130, 2670, 3390, 6319, 8023, 10057, 12638, 16046, 18957, 20114, 24069, 30171, 31595, 37914, 40115, 48138, 50285, 60342, 63190, 80230, 94785, 100570, 120345, 150855, 189570, 240690, 301710, 714047, 1428094, 2142141, 3570235, 4284282, 7140470, 10710705, 21421410]

約数ペア:

[(1, 21421410), (2, 10710705), (3, 7140470), (5, 4284282), (6, 3570235), (10, 2142141), (15, 1428094), (30, 714047), (71, 301710), (89, 240690), (113, 189570), (142, 150855), (178, 120345), (213, 100570), (226, 94785), (267, 80230), (339, 63190), (355, 60342), (426, 50285), (445, 48138), (534, 40115), (565, 37914), (678, 31595), (710, 30171), (890, 24069), (1065, 20114), (1130, 18957), (1335, 16046), (1695, 12638), (2130, 10057), (2670, 8023), (3390, 6319)]