19921468

素因数分解:

$2^2\times 7^1\times {\mathrm{31}}^1\times {\mathrm{59}}^1\times {\mathrm{389}}^1$

素因数の和:490

約数の個数: 48

約数和(自身を含む): 41932800

約数和(自身を除く): 22011332

約数列:

[1, 2, 4, 7, 14, 28, 31, 59, 62, 118, 124, 217, 236, 389, 413, 434, 778, 826, 868, 1556, 1652, 1829, 2723, 3658, 5446, 7316, 10892, 12059, 12803, 22951, 24118, 25606, 45902, 48236, 51212, 84413, 91804, 160657, 168826, 321314, 337652, 642628, 711481, 1422962, 2845924, 4980367, 9960734, 19921468]

約数ペア:

[(1, 19921468), (2, 9960734), (4, 4980367), (7, 2845924), (14, 1422962), (28, 711481), (31, 642628), (59, 337652), (62, 321314), (118, 168826), (124, 160657), (217, 91804), (236, 84413), (389, 51212), (413, 48236), (434, 45902), (778, 25606), (826, 24118), (868, 22951), (1556, 12803), (1652, 12059), (1829, 10892), (2723, 7316), (3658, 5446)]