21128814

素因数分解:

$2^1\times 3^2\times 7^1\times {\mathrm{61}}^1\times {\mathrm{2749}}^1$

素因数の和:2825

約数の個数: 48

約数和(自身を含む): 53196000

約数和(自身を除く): 32067186

約数列:

[1, 2, 3, 6, 7, 9, 14, 18, 21, 42, 61, 63, 122, 126, 183, 366, 427, 549, 854, 1098, 1281, 2562, 2749, 3843, 5498, 7686, 8247, 16494, 19243, 24741, 38486, 49482, 57729, 115458, 167689, 173187, 335378, 346374, 503067, 1006134, 1173823, 1509201, 2347646, 3018402, 3521469, 7042938, 10564407, 21128814]

約数ペア:

[(1, 21128814), (2, 10564407), (3, 7042938), (6, 3521469), (7, 3018402), (9, 2347646), (14, 1509201), (18, 1173823), (21, 1006134), (42, 503067), (61, 346374), (63, 335378), (122, 173187), (126, 167689), (183, 115458), (366, 57729), (427, 49482), (549, 38486), (854, 24741), (1098, 19243), (1281, 16494), (2562, 8247), (2749, 7686), (3843, 5498)]