19881015

素因数分解:

$3^1\times 5^1\times 7^2\times {\mathrm{11}}^1\times {\mathrm{2459}}^1$

素因数の和:2492

約数の個数: 48

約数和(自身を含む): 40383360

約数和(自身を除く): 20502345

約数列:

[1, 3, 5, 7, 11, 15, 21, 33, 35, 49, 55, 77, 105, 147, 165, 231, 245, 385, 539, 735, 1155, 1617, 2459, 2695, 7377, 8085, 12295, 17213, 27049, 36885, 51639, 81147, 86065, 120491, 135245, 189343, 258195, 361473, 405735, 568029, 602455, 946715, 1325401, 1807365, 2840145, 3976203, 6627005, 19881015]

約数ペア:

[(1, 19881015), (3, 6627005), (5, 3976203), (7, 2840145), (11, 1807365), (15, 1325401), (21, 946715), (33, 602455), (35, 568029), (49, 405735), (55, 361473), (77, 258195), (105, 189343), (147, 135245), (165, 120491), (231, 86065), (245, 81147), (385, 51639), (539, 36885), (735, 27049), (1155, 17213), (1617, 12295), (2459, 8085), (2695, 7377)]