21000918135

素因数分解:

$3^1\times 5^1\times {\mathrm{43}}^1\times {\mathrm{59}}^1\times {\mathrm{179}}^1\times {\mathrm{3083}}^1$

素因数の和:3372

約数の個数: 64

約数和(自身を含む): 35172403200

約数和(自身を除く): 14171485065

約数列:

[1, 3, 5, 15, 43, 59, 129, 177, 179, 215, 295, 537, 645, 885, 895, 2537, 2685, 3083, 7611, 7697, 9249, 10561, 12685, 15415, 23091, 31683, 38055, 38485, 46245, 52805, 115455, 132569, 158415, 181897, 397707, 454123, 545691, 551857, 662845, 909485, 1362369, 1655571, 1988535, 2270615, 2728455, 2759285, 6811845, 7821571, 8277855, 23464713, 23729851, 32559563, 39107855, 71189553, 97678689, 117323565, 118649255, 162797815, 355947765, 488393445, 1400061209, 4200183627, 7000306045, 21000918135]

約数ペア:

[(1, 21000918135), (3, 7000306045), (5, 4200183627), (15, 1400061209), (43, 488393445), (59, 355947765), (129, 162797815), (177, 118649255), (179, 117323565), (215, 97678689), (295, 71189553), (537, 39107855), (645, 32559563), (885, 23729851), (895, 23464713), (2537, 8277855), (2685, 7821571), (3083, 6811845), (7611, 2759285), (7697, 2728455), (9249, 2270615), (10561, 1988535), (12685, 1655571), (15415, 1362369), (23091, 909485), (31683, 662845), (38055, 551857), (38485, 545691), (46245, 454123), (52805, 397707), (115455, 181897), (132569, 158415)]