20218986515

素因数分解:

$5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{37}}^1\times {\mathrm{63211}}^1$

素因数の和:63292

約数の個数: 64

約数和(自身を含む): 32283632640

約数和(自身を除く): 12064646125

約数列:

[1, 5, 7, 13, 19, 35, 37, 65, 91, 95, 133, 185, 247, 259, 455, 481, 665, 703, 1235, 1295, 1729, 2405, 3367, 3515, 4921, 8645, 9139, 16835, 24605, 45695, 63211, 63973, 316055, 319865, 442477, 821743, 1201009, 2212385, 2338807, 4108715, 5752201, 6005045, 8407063, 11694035, 15613117, 16371649, 28761005, 30404491, 42035315, 44437333, 78065585, 81858245, 109291819, 152022455, 212831437, 222186665, 311061331, 546459095, 577685329, 1064157185, 1555306655, 2888426645, 4043797303, 20218986515]

約数ペア:

[(1, 20218986515), (5, 4043797303), (7, 2888426645), (13, 1555306655), (19, 1064157185), (35, 577685329), (37, 546459095), (65, 311061331), (91, 222186665), (95, 212831437), (133, 152022455), (185, 109291819), (247, 81858245), (259, 78065585), (455, 44437333), (481, 42035315), (665, 30404491), (703, 28761005), (1235, 16371649), (1295, 15613117), (1729, 11694035), (2405, 8407063), (3367, 6005045), (3515, 5752201), (4921, 4108715), (8645, 2338807), (9139, 2212385), (16835, 1201009), (24605, 821743), (45695, 442477), (63211, 319865), (63973, 316055)]