21490790828

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{59}}^1\times {\mathrm{769}}^1\times {\mathrm{9109}}^1$

素因数の和:9954

約数の個数: 48

約数和(自身を含む): 41246436000

約数和(自身を除く): 19755645172

約数列:

[1, 2, 4, 13, 26, 52, 59, 118, 236, 767, 769, 1534, 1538, 3068, 3076, 9109, 9997, 18218, 19994, 36436, 39988, 45371, 90742, 118417, 181484, 236834, 473668, 537431, 589823, 1074862, 1179646, 2149724, 2359292, 6986603, 7004821, 13973206, 14009642, 27946412, 28019284, 91062673, 182125346, 364250692, 413284439, 826568878, 1653137756, 5372697707, 10745395414, 21490790828]

約数ペア:

[(1, 21490790828), (2, 10745395414), (4, 5372697707), (13, 1653137756), (26, 826568878), (52, 413284439), (59, 364250692), (118, 182125346), (236, 91062673), (767, 28019284), (769, 27946412), (1534, 14009642), (1538, 13973206), (3068, 7004821), (3076, 6986603), (9109, 2359292), (9997, 2149724), (18218, 1179646), (19994, 1074862), (36436, 589823), (39988, 537431), (45371, 473668), (90742, 236834), (118417, 181484)]