21211974

素因数分解:

$2^1\times 3^2\times 7^1\times {\mathrm{79}}^1\times {\mathrm{2131}}^1$

素因数の和:2225

約数の個数: 48

約数和(自身を含む): 53214720

約数和(自身を除く): 32002746

約数列:

[1, 2, 3, 6, 7, 9, 14, 18, 21, 42, 63, 79, 126, 158, 237, 474, 553, 711, 1106, 1422, 1659, 2131, 3318, 4262, 4977, 6393, 9954, 12786, 14917, 19179, 29834, 38358, 44751, 89502, 134253, 168349, 268506, 336698, 505047, 1010094, 1178443, 1515141, 2356886, 3030282, 3535329, 7070658, 10605987, 21211974]

約数ペア:

[(1, 21211974), (2, 10605987), (3, 7070658), (6, 3535329), (7, 3030282), (9, 2356886), (14, 1515141), (18, 1178443), (21, 1010094), (42, 505047), (63, 336698), (79, 268506), (126, 168349), (158, 134253), (237, 89502), (474, 44751), (553, 38358), (711, 29834), (1106, 19179), (1422, 14917), (1659, 12786), (2131, 9954), (3318, 6393), (4262, 4977)]