21028518

素因数分解:

$2^1\times 3^3\times 7^1\times {\mathrm{55631}}^1$

素因数の和:55649

約数の個数: 32

約数和(自身を含む): 53406720

約数和(自身を除く): 32378202

約数列:

[1, 2, 3, 6, 7, 9, 14, 18, 21, 27, 42, 54, 63, 126, 189, 378, 55631, 111262, 166893, 333786, 389417, 500679, 778834, 1001358, 1168251, 1502037, 2336502, 3004074, 3504753, 7009506, 10514259, 21028518]

約数ペア:

[(1, 21028518), (2, 10514259), (3, 7009506), (6, 3504753), (7, 3004074), (9, 2336502), (14, 1502037), (18, 1168251), (21, 1001358), (27, 778834), (42, 500679), (54, 389417), (63, 333786), (126, 166893), (189, 111262), (378, 55631)]