19801496

素因数分解:

$2^3\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{911}}^1$

素因数の和:960

約数の個数: 64

約数和(自身を含む): 45964800

約数和(自身を除く): 26163304

約数列:

[1, 2, 4, 8, 11, 13, 19, 22, 26, 38, 44, 52, 76, 88, 104, 143, 152, 209, 247, 286, 418, 494, 572, 836, 911, 988, 1144, 1672, 1822, 1976, 2717, 3644, 5434, 7288, 10021, 10868, 11843, 17309, 20042, 21736, 23686, 34618, 40084, 47372, 69236, 80168, 94744, 130273, 138472, 190399, 225017, 260546, 380798, 450034, 521092, 761596, 900068, 1042184, 1523192, 1800136, 2475187, 4950374, 9900748, 19801496]

約数ペア:

[(1, 19801496), (2, 9900748), (4, 4950374), (8, 2475187), (11, 1800136), (13, 1523192), (19, 1042184), (22, 900068), (26, 761596), (38, 521092), (44, 450034), (52, 380798), (76, 260546), (88, 225017), (104, 190399), (143, 138472), (152, 130273), (209, 94744), (247, 80168), (286, 69236), (418, 47372), (494, 40084), (572, 34618), (836, 23686), (911, 21736), (988, 20042), (1144, 17309), (1672, 11843), (1822, 10868), (1976, 10021), (2717, 7288), (3644, 5434)]