21495951350

素因数分解:

$2^1\times 5^2\times {\mathrm{79}}^1\times {\mathrm{661}}^1\times {\mathrm{8233}}^1$

素因数の和:8985

約数の個数: 48

約数和(自身を含む): 40554755520

約数和(自身を除く): 19058804170

約数列:

[1, 2, 5, 10, 25, 50, 79, 158, 395, 661, 790, 1322, 1975, 3305, 3950, 6610, 8233, 16466, 16525, 33050, 41165, 52219, 82330, 104438, 205825, 261095, 411650, 522190, 650407, 1300814, 1305475, 2610950, 3252035, 5442013, 6504070, 10884026, 16260175, 27210065, 32520350, 54420130, 136050325, 272100650, 429919027, 859838054, 2149595135, 4299190270, 10747975675, 21495951350]

約数ペア:

[(1, 21495951350), (2, 10747975675), (5, 4299190270), (10, 2149595135), (25, 859838054), (50, 429919027), (79, 272100650), (158, 136050325), (395, 54420130), (661, 32520350), (790, 27210065), (1322, 16260175), (1975, 10884026), (3305, 6504070), (3950, 5442013), (6610, 3252035), (8233, 2610950), (16466, 1305475), (16525, 1300814), (33050, 650407), (41165, 522190), (52219, 411650), (82330, 261095), (104438, 205825)]