212784620

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^2\times {\mathrm{11071}}^1$

素因数の和:11142

約数の個数: 36

約数和(自身を含む): 461768832

約数和(自身を除く): 248984212

約数列:

[1, 2, 4, 5, 10, 20, 31, 62, 124, 155, 310, 620, 961, 1922, 3844, 4805, 9610, 11071, 19220, 22142, 44284, 55355, 110710, 221420, 343201, 686402, 1372804, 1716005, 3432010, 6864020, 10639231, 21278462, 42556924, 53196155, 106392310, 212784620]

約数ペア:

[(1, 212784620), (2, 106392310), (4, 53196155), (5, 42556924), (10, 21278462), (20, 10639231), (31, 6864020), (62, 3432010), (124, 1716005), (155, 1372804), (310, 686402), (620, 343201), (961, 221420), (1922, 110710), (3844, 55355), (4805, 44284), (9610, 22142), (11071, 19220)]