20735650

素因数分解:

$2^1\times 5^2\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{73}}^1$

素因数の和:140

約数の個数: 96

約数和(自身を含む): 46247040

約数和(自身を除く): 25511390

約数列:

[1, 2, 5, 10, 13, 19, 23, 25, 26, 38, 46, 50, 65, 73, 95, 115, 130, 146, 190, 230, 247, 299, 325, 365, 437, 475, 494, 575, 598, 650, 730, 874, 949, 950, 1150, 1235, 1387, 1495, 1679, 1825, 1898, 2185, 2470, 2774, 2990, 3358, 3650, 4370, 4745, 5681, 6175, 6935, 7475, 8395, 9490, 10925, 11362, 12350, 13870, 14950, 16790, 18031, 21827, 21850, 23725, 28405, 31901, 34675, 36062, 41975, 43654, 47450, 56810, 63802, 69350, 83950, 90155, 109135, 142025, 159505, 180310, 218270, 284050, 319010, 414713, 450775, 545675, 797525, 829426, 901550, 1091350, 1595050, 2073565, 4147130, 10367825, 20735650]

約数ペア:

[(1, 20735650), (2, 10367825), (5, 4147130), (10, 2073565), (13, 1595050), (19, 1091350), (23, 901550), (25, 829426), (26, 797525), (38, 545675), (46, 450775), (50, 414713), (65, 319010), (73, 284050), (95, 218270), (115, 180310), (130, 159505), (146, 142025), (190, 109135), (230, 90155), (247, 83950), (299, 69350), (325, 63802), (365, 56810), (437, 47450), (475, 43654), (494, 41975), (575, 36062), (598, 34675), (650, 31901), (730, 28405), (874, 23725), (949, 21850), (950, 21827), (1150, 18031), (1235, 16790), (1387, 14950), (1495, 13870), (1679, 12350), (1825, 11362), (1898, 10925), (2185, 9490), (2470, 8395), (2774, 7475), (2990, 6935), (3358, 6175), (3650, 5681), (4370, 4745)]