19145750

素因数分解:

$2^1\times 5^3\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{137}}^1$

素因数の和:210

約数の個数: 64

約数和(自身を含む): 39783744

約数和(自身を除く): 20637994

約数列:

[1, 2, 5, 10, 13, 25, 26, 43, 50, 65, 86, 125, 130, 137, 215, 250, 274, 325, 430, 559, 650, 685, 1075, 1118, 1370, 1625, 1781, 2150, 2795, 3250, 3425, 3562, 5375, 5590, 5891, 6850, 8905, 10750, 11782, 13975, 17125, 17810, 27950, 29455, 34250, 44525, 58910, 69875, 76583, 89050, 139750, 147275, 153166, 222625, 294550, 382915, 445250, 736375, 765830, 1472750, 1914575, 3829150, 9572875, 19145750]

約数ペア:

[(1, 19145750), (2, 9572875), (5, 3829150), (10, 1914575), (13, 1472750), (25, 765830), (26, 736375), (43, 445250), (50, 382915), (65, 294550), (86, 222625), (125, 153166), (130, 147275), (137, 139750), (215, 89050), (250, 76583), (274, 69875), (325, 58910), (430, 44525), (559, 34250), (650, 29455), (685, 27950), (1075, 17810), (1118, 17125), (1370, 13975), (1625, 11782), (1781, 10750), (2150, 8905), (2795, 6850), (3250, 5891), (3425, 5590), (3562, 5375)]