21977072

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{67}}^1\times {\mathrm{83}}^1$

素因数の和:190

約数の個数: 80

約数和(自身を含む): 49580160

約数和(自身を除く): 27603088

約数列:

[1, 2, 4, 8, 13, 16, 19, 26, 38, 52, 67, 76, 83, 104, 134, 152, 166, 208, 247, 268, 304, 332, 494, 536, 664, 871, 988, 1072, 1079, 1273, 1328, 1577, 1742, 1976, 2158, 2546, 3154, 3484, 3952, 4316, 5092, 5561, 6308, 6968, 8632, 10184, 11122, 12616, 13936, 16549, 17264, 20368, 20501, 22244, 25232, 33098, 41002, 44488, 66196, 72293, 82004, 88976, 105659, 132392, 144586, 164008, 211318, 264784, 289172, 328016, 422636, 578344, 845272, 1156688, 1373567, 1690544, 2747134, 5494268, 10988536, 21977072]

約数ペア:

[(1, 21977072), (2, 10988536), (4, 5494268), (8, 2747134), (13, 1690544), (16, 1373567), (19, 1156688), (26, 845272), (38, 578344), (52, 422636), (67, 328016), (76, 289172), (83, 264784), (104, 211318), (134, 164008), (152, 144586), (166, 132392), (208, 105659), (247, 88976), (268, 82004), (304, 72293), (332, 66196), (494, 44488), (536, 41002), (664, 33098), (871, 25232), (988, 22244), (1072, 20501), (1079, 20368), (1273, 17264), (1328, 16549), (1577, 13936), (1742, 12616), (1976, 11122), (2158, 10184), (2546, 8632), (3154, 6968), (3484, 6308), (3952, 5561), (4316, 5092)]