21498015

素因数分解:

$3^1\times 5^1\times 7^2\times {\mathrm{11}}^1\times {\mathrm{2659}}^1$

素因数の和:2692

約数の個数: 48

約数和(自身を含む): 43666560

約数和(自身を除く): 22168545

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, 2659, 2695, 7977, 8085, 13295, 18613, 29249, 39885, 55839, 87747, 93065, 130291, 146245, 204743, 279195, 390873, 438735, 614229, 651455, 1023715, 1433201, 1954365, 3071145, 4299603, 7166005, 21498015]

約数ペア:

[(1, 21498015), (3, 7166005), (5, 4299603), (7, 3071145), (11, 1954365), (15, 1433201), (21, 1023715), (33, 651455), (35, 614229), (49, 438735), (55, 390873), (77, 279195), (105, 204743), (147, 146245), (165, 130291), (231, 93065), (245, 87747), (385, 55839), (539, 39885), (735, 29249), (1155, 18613), (1617, 13295), (2659, 8085), (2695, 7977)]