20921855678425

素因数分解:

$5^2\times {\mathrm{13}}^1\times {\mathrm{101}}^1\times {\mathrm{137}}^1\times {\mathrm{1097}}^1\times {\mathrm{4241}}^1$

素因数の和:5599

約数の個数: 96

約数和(自身を含む): 28453912520544

約数和(自身を除く): 7532056842119

約数列:

[1, 5, 13, 25, 65, 101, 137, 325, 505, 685, 1097, 1313, 1781, 2525, 3425, 4241, 5485, 6565, 8905, 13837, 14261, 21205, 27425, 32825, 44525, 55133, 69185, 71305, 106025, 110797, 150289, 179881, 275665, 345925, 356525, 428341, 553985, 581017, 751445, 899405, 1378325, 1440361, 1953757, 2141705, 2769925, 2905085, 3757225, 4497025, 4652377, 5568433, 7201805, 7553221, 9768785, 10708525, 14525425, 15179189, 23261885, 27842165, 36009025, 37766105, 48843925, 58682717, 60480901, 75895945, 116309425, 139210825, 188830525, 197329457, 293413585, 302404505, 379479725, 469890077, 637375649, 762875321, 986647285, 1467067925, 1512022525, 2349450385, 3186878245, 3814376605, 4933236425, 6108571001, 8285883437, 11747251925, 15934391225, 19071883025, 30542855005, 41429417185, 64374940549, 152714275025, 207147085925, 321874702745, 836874227137, 1609373513725, 4184371135685, 20921855678425]

約数ペア:

[(1, 20921855678425), (5, 4184371135685), (13, 1609373513725), (25, 836874227137), (65, 321874702745), (101, 207147085925), (137, 152714275025), (325, 64374940549), (505, 41429417185), (685, 30542855005), (1097, 19071883025), (1313, 15934391225), (1781, 11747251925), (2525, 8285883437), (3425, 6108571001), (4241, 4933236425), (5485, 3814376605), (6565, 3186878245), (8905, 2349450385), (13837, 1512022525), (14261, 1467067925), (21205, 986647285), (27425, 762875321), (32825, 637375649), (44525, 469890077), (55133, 379479725), (69185, 302404505), (71305, 293413585), (106025, 197329457), (110797, 188830525), (150289, 139210825), (179881, 116309425), (275665, 75895945), (345925, 60480901), (356525, 58682717), (428341, 48843925), (553985, 37766105), (581017, 36009025), (751445, 27842165), (899405, 23261885), (1378325, 15179189), (1440361, 14525425), (1953757, 10708525), (2141705, 9768785), (2769925, 7553221), (2905085, 7201805), (3757225, 5568433), (4497025, 4652377)]