1999701172

素因数分解:

$2^2\times 7^2\times {\mathrm{97}}^1\times {\mathrm{107}}^1\times {\mathrm{983}}^1$

素因数の和:1205

約数の個数: 72

約数和(自身を含む): 4155447744

約数和(自身を除く): 2155746572

約数列:

[1, 2, 4, 7, 14, 28, 49, 97, 98, 107, 194, 196, 214, 388, 428, 679, 749, 983, 1358, 1498, 1966, 2716, 2996, 3932, 4753, 5243, 6881, 9506, 10379, 10486, 13762, 19012, 20758, 20972, 27524, 41516, 48167, 72653, 95351, 96334, 105181, 145306, 190702, 192668, 210362, 290612, 381404, 420724, 508571, 667457, 736267, 1017142, 1334914, 1472534, 2034284, 2669828, 2945068, 4672199, 5153869, 9344398, 10202557, 10307738, 18688796, 20405114, 20615476, 40810228, 71417899, 142835798, 285671596, 499925293, 999850586, 1999701172]

約数ペア:

[(1, 1999701172), (2, 999850586), (4, 499925293), (7, 285671596), (14, 142835798), (28, 71417899), (49, 40810228), (97, 20615476), (98, 20405114), (107, 18688796), (194, 10307738), (196, 10202557), (214, 9344398), (388, 5153869), (428, 4672199), (679, 2945068), (749, 2669828), (983, 2034284), (1358, 1472534), (1498, 1334914), (1966, 1017142), (2716, 736267), (2996, 667457), (3932, 508571), (4753, 420724), (5243, 381404), (6881, 290612), (9506, 210362), (10379, 192668), (10486, 190702), (13762, 145306), (19012, 105181), (20758, 96334), (20972, 95351), (27524, 72653), (41516, 48167)]