18764590

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{71}}^1\times {\mathrm{107}}^1$

素因数の和:217

約数の個数: 64

約数和(自身を含む): 39191040

約数和(自身を除く): 20426450

約数列:

[1, 2, 5, 10, 13, 19, 26, 38, 65, 71, 95, 107, 130, 142, 190, 214, 247, 355, 494, 535, 710, 923, 1070, 1235, 1349, 1391, 1846, 2033, 2470, 2698, 2782, 4066, 4615, 6745, 6955, 7597, 9230, 10165, 13490, 13910, 15194, 17537, 20330, 26429, 35074, 37985, 52858, 75970, 87685, 98761, 132145, 144343, 175370, 197522, 264290, 288686, 493805, 721715, 987610, 1443430, 1876459, 3752918, 9382295, 18764590]

約数ペア:

[(1, 18764590), (2, 9382295), (5, 3752918), (10, 1876459), (13, 1443430), (19, 987610), (26, 721715), (38, 493805), (65, 288686), (71, 264290), (95, 197522), (107, 175370), (130, 144343), (142, 132145), (190, 98761), (214, 87685), (247, 75970), (355, 52858), (494, 37985), (535, 35074), (710, 26429), (923, 20330), (1070, 17537), (1235, 15194), (1349, 13910), (1391, 13490), (1846, 10165), (2033, 9230), (2470, 7597), (2698, 6955), (2782, 6745), (4066, 4615)]