639510590

素因数分解:

$2^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{37}}^1\times {\mathrm{293}}^1\times {\mathrm{347}}^1$

素因数の和:701

約数の個数: 64

約数和(自身を含む): 1259665344

約数和(自身を除く): 620154754

約数列:

[1, 2, 5, 10, 17, 34, 37, 74, 85, 170, 185, 293, 347, 370, 586, 629, 694, 1258, 1465, 1735, 2930, 3145, 3470, 4981, 5899, 6290, 9962, 10841, 11798, 12839, 21682, 24905, 25678, 29495, 49810, 54205, 58990, 64195, 101671, 108410, 128390, 184297, 203342, 218263, 368594, 436526, 508355, 921485, 1016710, 1091315, 1728407, 1842970, 2182630, 3456814, 3761827, 7523654, 8642035, 17284070, 18809135, 37618270, 63951059, 127902118, 319755295, 639510590]

約数ペア:

[(1, 639510590), (2, 319755295), (5, 127902118), (10, 63951059), (17, 37618270), (34, 18809135), (37, 17284070), (74, 8642035), (85, 7523654), (170, 3761827), (185, 3456814), (293, 2182630), (347, 1842970), (370, 1728407), (586, 1091315), (629, 1016710), (694, 921485), (1258, 508355), (1465, 436526), (1735, 368594), (2930, 218263), (3145, 203342), (3470, 184297), (4981, 128390), (5899, 108410), (6290, 101671), (9962, 64195), (10841, 58990), (11798, 54205), (12839, 49810), (21682, 29495), (24905, 25678)]