21271754

素因数分解:

$2^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{211}}^1\times {\mathrm{379}}^1$

素因数の和:618

約数の個数: 32

約数和(自身を含む): 38668800

約数和(自身を除く): 17397046

約数列:

[1, 2, 7, 14, 19, 38, 133, 211, 266, 379, 422, 758, 1477, 2653, 2954, 4009, 5306, 7201, 8018, 14402, 28063, 50407, 56126, 79969, 100814, 159938, 559783, 1119566, 1519411, 3038822, 10635877, 21271754]

約数ペア:

[(1, 21271754), (2, 10635877), (7, 3038822), (14, 1519411), (19, 1119566), (38, 559783), (133, 159938), (211, 100814), (266, 79969), (379, 56126), (422, 50407), (758, 28063), (1477, 14402), (2653, 8018), (2954, 7201), (4009, 5306)]