19121828

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{89}}^1\times {\mathrm{257}}^1$

素因数の和:380

約数の個数: 48

約数和(自身を含む): 39009600

約数和(自身を除く): 19887772

約数列:

[1, 2, 4, 11, 19, 22, 38, 44, 76, 89, 178, 209, 257, 356, 418, 514, 836, 979, 1028, 1691, 1958, 2827, 3382, 3916, 4883, 5654, 6764, 9766, 11308, 18601, 19532, 22873, 37202, 45746, 53713, 74404, 91492, 107426, 214852, 251603, 434587, 503206, 869174, 1006412, 1738348, 4780457, 9560914, 19121828]

約数ペア:

[(1, 19121828), (2, 9560914), (4, 4780457), (11, 1738348), (19, 1006412), (22, 869174), (38, 503206), (44, 434587), (76, 251603), (89, 214852), (178, 107426), (209, 91492), (257, 74404), (356, 53713), (418, 45746), (514, 37202), (836, 22873), (979, 19532), (1028, 18601), (1691, 11308), (1958, 9766), (2827, 6764), (3382, 5654), (3916, 4883)]