20860904

素因数分解:

$2^3\times {\mathrm{17}}^1\times {\mathrm{157}}^1\times {\mathrm{977}}^1$

素因数の和:1157

約数の個数: 32

約数和(自身を含む): 41721480

約数和(自身を除く): 20860576

約数列:

[1, 2, 4, 8, 17, 34, 68, 136, 157, 314, 628, 977, 1256, 1954, 2669, 3908, 5338, 7816, 10676, 16609, 21352, 33218, 66436, 132872, 153389, 306778, 613556, 1227112, 2607613, 5215226, 10430452, 20860904]

約数ペア:

[(1, 20860904), (2, 10430452), (4, 5215226), (8, 2607613), (17, 1227112), (34, 613556), (68, 306778), (136, 153389), (157, 132872), (314, 66436), (628, 33218), (977, 21352), (1256, 16609), (1954, 10676), (2669, 7816), (3908, 5338)]