20121696008

素因数分解:

$2^3\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{89}}^1\times {\mathrm{47981}}^1$

素因数の和:48126

約数の個数: 64

約数和(自身を含む): 41456448000

約数和(自身を除く): 21334751992

約数列:

[1, 2, 4, 8, 19, 31, 38, 62, 76, 89, 124, 152, 178, 248, 356, 589, 712, 1178, 1691, 2356, 2759, 3382, 4712, 5518, 6764, 11036, 13528, 22072, 47981, 52421, 95962, 104842, 191924, 209684, 383848, 419368, 911639, 1487411, 1823278, 2974822, 3646556, 4270309, 5949644, 7293112, 8540618, 11899288, 17081236, 28260809, 34162472, 56521618, 81135871, 113043236, 132379579, 162271742, 226086472, 264759158, 324543484, 529518316, 649086968, 1059036632, 2515212001, 5030424002, 10060848004, 20121696008]

約数ペア:

[(1, 20121696008), (2, 10060848004), (4, 5030424002), (8, 2515212001), (19, 1059036632), (31, 649086968), (38, 529518316), (62, 324543484), (76, 264759158), (89, 226086472), (124, 162271742), (152, 132379579), (178, 113043236), (248, 81135871), (356, 56521618), (589, 34162472), (712, 28260809), (1178, 17081236), (1691, 11899288), (2356, 8540618), (2759, 7293112), (3382, 5949644), (4712, 4270309), (5518, 3646556), (6764, 2974822), (11036, 1823278), (13528, 1487411), (22072, 911639), (47981, 419368), (52421, 383848), (95962, 209684), (104842, 191924)]