178459020

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{52181}}^1$

素因数の和:52215

約数の個数: 72

約数和(自身を含む): 569827440

約数和(自身を除く): 391368420

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, 52181, 104362, 156543, 208724, 260905, 313086, 469629, 521810, 626172, 782715, 939258, 991439, 1043620, 1565430, 1878516, 1982878, 2348145, 2974317, 3130860, 3965756, 4696290, 4957195, 5948634, 8922951, 9392580, 9914390, 11897268, 14871585, 17845902, 19828780, 29743170, 35691804, 44614755, 59486340, 89229510, 178459020]

約数ペア:

[(1, 178459020), (2, 89229510), (3, 59486340), (4, 44614755), (5, 35691804), (6, 29743170), (9, 19828780), (10, 17845902), (12, 14871585), (15, 11897268), (18, 9914390), (19, 9392580), (20, 8922951), (30, 5948634), (36, 4957195), (38, 4696290), (45, 3965756), (57, 3130860), (60, 2974317), (76, 2348145), (90, 1982878), (95, 1878516), (114, 1565430), (171, 1043620), (180, 991439), (190, 939258), (228, 782715), (285, 626172), (342, 521810), (380, 469629), (570, 313086), (684, 260905), (855, 208724), (1140, 156543), (1710, 104362), (3420, 52181)]