217531960

素因数分解:

$2^3\times 5^1\times {\mathrm{31}}^2\times {\mathrm{5659}}^1$

素因数の和:5732

約数の個数: 48

約数和(自身を含む): 505834200

約数和(自身を除く): 288302240

約数列:

[1, 2, 4, 5, 8, 10, 20, 31, 40, 62, 124, 155, 248, 310, 620, 961, 1240, 1922, 3844, 4805, 5659, 7688, 9610, 11318, 19220, 22636, 28295, 38440, 45272, 56590, 113180, 175429, 226360, 350858, 701716, 877145, 1403432, 1754290, 3508580, 5438299, 7017160, 10876598, 21753196, 27191495, 43506392, 54382990, 108765980, 217531960]

約数ペア:

[(1, 217531960), (2, 108765980), (4, 54382990), (5, 43506392), (8, 27191495), (10, 21753196), (20, 10876598), (31, 7017160), (40, 5438299), (62, 3508580), (124, 1754290), (155, 1403432), (248, 877145), (310, 701716), (620, 350858), (961, 226360), (1240, 175429), (1922, 113180), (3844, 56590), (4805, 45272), (5659, 38440), (7688, 28295), (9610, 22636), (11318, 19220)]