18220468

素因数分解:

$2^2\times 7^1\times {\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{1181}}^1$

素因数の和:1240

約数の個数: 48

約数和(自身を含む): 39715200

約数和(自身を除く): 21494732

約数列:

[1, 2, 4, 7, 14, 19, 28, 29, 38, 58, 76, 116, 133, 203, 266, 406, 532, 551, 812, 1102, 1181, 2204, 2362, 3857, 4724, 7714, 8267, 15428, 16534, 22439, 33068, 34249, 44878, 68498, 89756, 136996, 157073, 239743, 314146, 479486, 628292, 650731, 958972, 1301462, 2602924, 4555117, 9110234, 18220468]

約数ペア:

[(1, 18220468), (2, 9110234), (4, 4555117), (7, 2602924), (14, 1301462), (19, 958972), (28, 650731), (29, 628292), (38, 479486), (58, 314146), (76, 239743), (116, 157073), (133, 136996), (203, 89756), (266, 68498), (406, 44878), (532, 34249), (551, 33068), (812, 22439), (1102, 16534), (1181, 15428), (2204, 8267), (2362, 7714), (3857, 4724)]