81779360

素因数分解:

$2^5\times 5^1\times {\mathrm{13}}^1\times {\mathrm{39317}}^1$

素因数の和:39345

約数の個数: 48

約数和(自身を含む): 208070856

約数和(自身を除く): 126291496

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 32, 40, 52, 65, 80, 104, 130, 160, 208, 260, 416, 520, 1040, 2080, 39317, 78634, 157268, 196585, 314536, 393170, 511121, 629072, 786340, 1022242, 1258144, 1572680, 2044484, 2555605, 3145360, 4088968, 5111210, 6290720, 8177936, 10222420, 16355872, 20444840, 40889680, 81779360]

約数ペア:

[(1, 81779360), (2, 40889680), (4, 20444840), (5, 16355872), (8, 10222420), (10, 8177936), (13, 6290720), (16, 5111210), (20, 4088968), (26, 3145360), (32, 2555605), (40, 2044484), (52, 1572680), (65, 1258144), (80, 1022242), (104, 786340), (130, 629072), (160, 511121), (208, 393170), (260, 314536), (416, 196585), (520, 157268), (1040, 78634), (2080, 39317)]