18703840

素因数分解:

$2^5\times 5^1\times {\mathrm{29}}^2\times {\mathrm{139}}^1$

素因数の和:212

約数の個数: 72

約数和(自身を含む): 46093320

約数和(自身を除く): 27389480

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 29, 32, 40, 58, 80, 116, 139, 145, 160, 232, 278, 290, 464, 556, 580, 695, 841, 928, 1112, 1160, 1390, 1682, 2224, 2320, 2780, 3364, 4031, 4205, 4448, 4640, 5560, 6728, 8062, 8410, 11120, 13456, 16124, 16820, 20155, 22240, 26912, 32248, 33640, 40310, 64496, 67280, 80620, 116899, 128992, 134560, 161240, 233798, 322480, 467596, 584495, 644960, 935192, 1168990, 1870384, 2337980, 3740768, 4675960, 9351920, 18703840]

約数ペア:

[(1, 18703840), (2, 9351920), (4, 4675960), (5, 3740768), (8, 2337980), (10, 1870384), (16, 1168990), (20, 935192), (29, 644960), (32, 584495), (40, 467596), (58, 322480), (80, 233798), (116, 161240), (139, 134560), (145, 128992), (160, 116899), (232, 80620), (278, 67280), (290, 64496), (464, 40310), (556, 33640), (580, 32248), (695, 26912), (841, 22240), (928, 20155), (1112, 16820), (1160, 16124), (1390, 13456), (1682, 11120), (2224, 8410), (2320, 8062), (2780, 6728), (3364, 5560), (4031, 4640), (4205, 4448)]