128654320

素因数分解:

$2^4\times 5^1\times {\mathrm{19}}^1\times {\mathrm{53}}^1\times {\mathrm{1597}}^1$

素因数の和:1682

約数の個数: 80

約数和(自身を含む): 321006240

約数和(自身を除く): 192351920

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 38, 40, 53, 76, 80, 95, 106, 152, 190, 212, 265, 304, 380, 424, 530, 760, 848, 1007, 1060, 1520, 1597, 2014, 2120, 3194, 4028, 4240, 5035, 6388, 7985, 8056, 10070, 12776, 15970, 16112, 20140, 25552, 30343, 31940, 40280, 60686, 63880, 80560, 84641, 121372, 127760, 151715, 169282, 242744, 303430, 338564, 423205, 485488, 606860, 677128, 846410, 1213720, 1354256, 1608179, 1692820, 2427440, 3216358, 3385640, 6432716, 6771280, 8040895, 12865432, 16081790, 25730864, 32163580, 64327160, 128654320]

約数ペア:

[(1, 128654320), (2, 64327160), (4, 32163580), (5, 25730864), (8, 16081790), (10, 12865432), (16, 8040895), (19, 6771280), (20, 6432716), (38, 3385640), (40, 3216358), (53, 2427440), (76, 1692820), (80, 1608179), (95, 1354256), (106, 1213720), (152, 846410), (190, 677128), (212, 606860), (265, 485488), (304, 423205), (380, 338564), (424, 303430), (530, 242744), (760, 169282), (848, 151715), (1007, 127760), (1060, 121372), (1520, 84641), (1597, 80560), (2014, 63880), (2120, 60686), (3194, 40280), (4028, 31940), (4240, 30343), (5035, 25552), (6388, 20140), (7985, 16112), (8056, 15970), (10070, 12776)]