20638618

素因数分解:

$2^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{13}}^3\times {\mathrm{61}}^1$

素因数の和:120

約数の個数: 64

約数和(自身を含む): 42497280

約数和(自身を除く): 21858662

約数列:

[1, 2, 7, 11, 13, 14, 22, 26, 61, 77, 91, 122, 143, 154, 169, 182, 286, 338, 427, 671, 793, 854, 1001, 1183, 1342, 1586, 1859, 2002, 2197, 2366, 3718, 4394, 4697, 5551, 8723, 9394, 10309, 11102, 13013, 15379, 17446, 20618, 24167, 26026, 30758, 48334, 61061, 72163, 113399, 122122, 134017, 144326, 169169, 226798, 268034, 338338, 793793, 938119, 1474187, 1587586, 1876238, 2948374, 10319309, 20638618]

約数ペア:

[(1, 20638618), (2, 10319309), (7, 2948374), (11, 1876238), (13, 1587586), (14, 1474187), (22, 938119), (26, 793793), (61, 338338), (77, 268034), (91, 226798), (122, 169169), (143, 144326), (154, 134017), (169, 122122), (182, 113399), (286, 72163), (338, 61061), (427, 48334), (671, 30758), (793, 26026), (854, 24167), (1001, 20618), (1183, 17446), (1342, 15379), (1586, 13013), (1859, 11102), (2002, 10309), (2197, 9394), (2366, 8723), (3718, 5551), (4394, 4697)]