90378440

素因数分解:

$2^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{109}}^1\times {\mathrm{1091}}^1$

素因数の和:1230

約数の個数: 64

約数和(自身を含む): 216216000

約数和(自身を除く): 125837560

約数列:

[1, 2, 4, 5, 8, 10, 19, 20, 38, 40, 76, 95, 109, 152, 190, 218, 380, 436, 545, 760, 872, 1090, 1091, 2071, 2180, 2182, 4142, 4360, 4364, 5455, 8284, 8728, 10355, 10910, 16568, 20710, 20729, 21820, 41420, 41458, 43640, 82840, 82916, 103645, 118919, 165832, 207290, 237838, 414580, 475676, 594595, 829160, 951352, 1189190, 2259461, 2378380, 4518922, 4756760, 9037844, 11297305, 18075688, 22594610, 45189220, 90378440]

約数ペア:

[(1, 90378440), (2, 45189220), (4, 22594610), (5, 18075688), (8, 11297305), (10, 9037844), (19, 4756760), (20, 4518922), (38, 2378380), (40, 2259461), (76, 1189190), (95, 951352), (109, 829160), (152, 594595), (190, 475676), (218, 414580), (380, 237838), (436, 207290), (545, 165832), (760, 118919), (872, 103645), (1090, 82916), (1091, 82840), (2071, 43640), (2180, 41458), (2182, 41420), (4142, 21820), (4360, 20729), (4364, 20710), (5455, 16568), (8284, 10910), (8728, 10355)]