21245770

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{631}}^1$

素因数の和:695

約数の個数: 64

約数和(自身を含む): 48416256

約数和(自身を除く): 27170486

約数列:

[1, 2, 5, 7, 10, 13, 14, 26, 35, 37, 65, 70, 74, 91, 130, 182, 185, 259, 370, 455, 481, 518, 631, 910, 962, 1262, 1295, 2405, 2590, 3155, 3367, 4417, 4810, 6310, 6734, 8203, 8834, 16406, 16835, 22085, 23347, 33670, 41015, 44170, 46694, 57421, 82030, 114842, 116735, 163429, 233470, 287105, 303511, 326858, 574210, 607022, 817145, 1517555, 1634290, 2124577, 3035110, 4249154, 10622885, 21245770]

約数ペア:

[(1, 21245770), (2, 10622885), (5, 4249154), (7, 3035110), (10, 2124577), (13, 1634290), (14, 1517555), (26, 817145), (35, 607022), (37, 574210), (65, 326858), (70, 303511), (74, 287105), (91, 233470), (130, 163429), (182, 116735), (185, 114842), (259, 82030), (370, 57421), (455, 46694), (481, 44170), (518, 41015), (631, 33670), (910, 23347), (962, 22085), (1262, 16835), (1295, 16406), (2405, 8834), (2590, 8203), (3155, 6734), (3367, 6310), (4417, 4810)]