21272784

素因数分解:

$2^4\times 3^1\times {\mathrm{13}}^1\times {\mathrm{73}}^1\times {\mathrm{467}}^1$

素因数の和:564

約数の個数: 80

約数和(自身を含む): 60121152

約数和(自身を除く): 38848368

約数列:

[1, 2, 3, 4, 6, 8, 12, 13, 16, 24, 26, 39, 48, 52, 73, 78, 104, 146, 156, 208, 219, 292, 312, 438, 467, 584, 624, 876, 934, 949, 1168, 1401, 1752, 1868, 1898, 2802, 2847, 3504, 3736, 3796, 5604, 5694, 6071, 7472, 7592, 11208, 11388, 12142, 15184, 18213, 22416, 22776, 24284, 34091, 36426, 45552, 48568, 68182, 72852, 97136, 102273, 136364, 145704, 204546, 272728, 291408, 409092, 443183, 545456, 818184, 886366, 1329549, 1636368, 1772732, 2659098, 3545464, 5318196, 7090928, 10636392, 21272784]

約数ペア:

[(1, 21272784), (2, 10636392), (3, 7090928), (4, 5318196), (6, 3545464), (8, 2659098), (12, 1772732), (13, 1636368), (16, 1329549), (24, 886366), (26, 818184), (39, 545456), (48, 443183), (52, 409092), (73, 291408), (78, 272728), (104, 204546), (146, 145704), (156, 136364), (208, 102273), (219, 97136), (292, 72852), (312, 68182), (438, 48568), (467, 45552), (584, 36426), (624, 34091), (876, 24284), (934, 22776), (949, 22416), (1168, 18213), (1401, 15184), (1752, 12142), (1868, 11388), (1898, 11208), (2802, 7592), (2847, 7472), (3504, 6071), (3736, 5694), (3796, 5604)]