18499820

素因数分解:

$2^2\times 5^1\times {\mathrm{23}}^1\times {\mathrm{131}}^1\times {\mathrm{307}}^1$

素因数の和:470

約数の個数: 48

約数和(自身を含む): 40981248

約数和(自身を除く): 22481428

約数列:

[1, 2, 4, 5, 10, 20, 23, 46, 92, 115, 131, 230, 262, 307, 460, 524, 614, 655, 1228, 1310, 1535, 2620, 3013, 3070, 6026, 6140, 7061, 12052, 14122, 15065, 28244, 30130, 35305, 40217, 60260, 70610, 80434, 141220, 160868, 201085, 402170, 804340, 924991, 1849982, 3699964, 4624955, 9249910, 18499820]

約数ペア:

[(1, 18499820), (2, 9249910), (4, 4624955), (5, 3699964), (10, 1849982), (20, 924991), (23, 804340), (46, 402170), (92, 201085), (115, 160868), (131, 141220), (230, 80434), (262, 70610), (307, 60260), (460, 40217), (524, 35305), (614, 30130), (655, 28244), (1228, 15065), (1310, 14122), (1535, 12052), (2620, 7061), (3013, 6140), (3070, 6026)]