20558950

素因数分解:

$2^1\times 5^2\times {\mathrm{17}}^1\times {\mathrm{19}}^2\times {\mathrm{67}}^1$

素因数の和:134

約数の個数: 72

約数和(自身を含む): 43369992

約数和(自身を除く): 22811042

約数列:

[1, 2, 5, 10, 17, 19, 25, 34, 38, 50, 67, 85, 95, 134, 170, 190, 323, 335, 361, 425, 475, 646, 670, 722, 850, 950, 1139, 1273, 1615, 1675, 1805, 2278, 2546, 3230, 3350, 3610, 5695, 6137, 6365, 8075, 9025, 11390, 12274, 12730, 16150, 18050, 21641, 24187, 28475, 30685, 31825, 43282, 48374, 56950, 61370, 63650, 108205, 120935, 153425, 216410, 241870, 306850, 411179, 541025, 604675, 822358, 1082050, 1209350, 2055895, 4111790, 10279475, 20558950]

約数ペア:

[(1, 20558950), (2, 10279475), (5, 4111790), (10, 2055895), (17, 1209350), (19, 1082050), (25, 822358), (34, 604675), (38, 541025), (50, 411179), (67, 306850), (85, 241870), (95, 216410), (134, 153425), (170, 120935), (190, 108205), (323, 63650), (335, 61370), (361, 56950), (425, 48374), (475, 43282), (646, 31825), (670, 30685), (722, 28475), (850, 24187), (950, 21641), (1139, 18050), (1273, 16150), (1615, 12730), (1675, 12274), (1805, 11390), (2278, 9025), (2546, 8075), (3230, 6365), (3350, 6137), (3610, 5695)]