157440980

素因数分解:

$2^2\times 5^1\times {\mathrm{23}}^3\times {\mathrm{647}}^1$

素因数の和:725

約数の個数: 48

約数和(自身を含む): 346187520

約数和(自身を除く): 188746540

約数列:

[1, 2, 4, 5, 10, 20, 23, 46, 92, 115, 230, 460, 529, 647, 1058, 1294, 2116, 2588, 2645, 3235, 5290, 6470, 10580, 12167, 12940, 14881, 24334, 29762, 48668, 59524, 60835, 74405, 121670, 148810, 243340, 297620, 342263, 684526, 1369052, 1711315, 3422630, 6845260, 7872049, 15744098, 31488196, 39360245, 78720490, 157440980]

約数ペア:

[(1, 157440980), (2, 78720490), (4, 39360245), (5, 31488196), (10, 15744098), (20, 7872049), (23, 6845260), (46, 3422630), (92, 1711315), (115, 1369052), (230, 684526), (460, 342263), (529, 297620), (647, 243340), (1058, 148810), (1294, 121670), (2116, 74405), (2588, 60835), (2645, 59524), (3235, 48668), (5290, 29762), (6470, 24334), (10580, 14881), (12167, 12940)]