21274928

素因数分解:

$2^4\times {\mathrm{31}}^1\times {\mathrm{59}}^1\times {\mathrm{727}}^1$

素因数の和:825

約数の個数: 40

約数和(自身を含む): 43330560

約数和(自身を除く): 22055632

約数列:

[1, 2, 4, 8, 16, 31, 59, 62, 118, 124, 236, 248, 472, 496, 727, 944, 1454, 1829, 2908, 3658, 5816, 7316, 11632, 14632, 22537, 29264, 42893, 45074, 85786, 90148, 171572, 180296, 343144, 360592, 686288, 1329683, 2659366, 5318732, 10637464, 21274928]

約数ペア:

[(1, 21274928), (2, 10637464), (4, 5318732), (8, 2659366), (16, 1329683), (31, 686288), (59, 360592), (62, 343144), (118, 180296), (124, 171572), (236, 90148), (248, 85786), (472, 45074), (496, 42893), (727, 29264), (944, 22537), (1454, 14632), (1829, 11632), (2908, 7316), (3658, 5816)]