158985220

素因数分解:

$2^2\times 5^1\times {\mathrm{109}}^1\times {\mathrm{233}}^1\times {\mathrm{313}}^1$

素因数の和:664

約数の個数: 48

約数和(自身を含む): 339459120

約数和(自身を除く): 180473900

約数列:

[1, 2, 4, 5, 10, 20, 109, 218, 233, 313, 436, 466, 545, 626, 932, 1090, 1165, 1252, 1565, 2180, 2330, 3130, 4660, 6260, 25397, 34117, 50794, 68234, 72929, 101588, 126985, 136468, 145858, 170585, 253970, 291716, 341170, 364645, 507940, 682340, 729290, 1458580, 7949261, 15898522, 31797044, 39746305, 79492610, 158985220]

約数ペア:

[(1, 158985220), (2, 79492610), (4, 39746305), (5, 31797044), (10, 15898522), (20, 7949261), (109, 1458580), (218, 729290), (233, 682340), (313, 507940), (436, 364645), (466, 341170), (545, 291716), (626, 253970), (932, 170585), (1090, 145858), (1165, 136468), (1252, 126985), (1565, 101588), (2180, 72929), (2330, 68234), (3130, 50794), (4660, 34117), (6260, 25397)]