81894320

素因数分解:

$2^4\times 5^1\times {\mathrm{37}}^1\times {\mathrm{73}}^1\times {\mathrm{379}}^1$

素因数の和:502

約数の個数: 80

約数和(自身を含む): 198752160

約数和(自身を除く): 116857840

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 37, 40, 73, 74, 80, 146, 148, 185, 292, 296, 365, 370, 379, 584, 592, 730, 740, 758, 1168, 1460, 1480, 1516, 1895, 2701, 2920, 2960, 3032, 3790, 5402, 5840, 6064, 7580, 10804, 13505, 14023, 15160, 21608, 27010, 27667, 28046, 30320, 43216, 54020, 55334, 56092, 70115, 108040, 110668, 112184, 138335, 140230, 216080, 221336, 224368, 276670, 280460, 442672, 553340, 560920, 1023679, 1106680, 1121840, 2047358, 2213360, 4094716, 5118395, 8189432, 10236790, 16378864, 20473580, 40947160, 81894320]

約数ペア:

[(1, 81894320), (2, 40947160), (4, 20473580), (5, 16378864), (8, 10236790), (10, 8189432), (16, 5118395), (20, 4094716), (37, 2213360), (40, 2047358), (73, 1121840), (74, 1106680), (80, 1023679), (146, 560920), (148, 553340), (185, 442672), (292, 280460), (296, 276670), (365, 224368), (370, 221336), (379, 216080), (584, 140230), (592, 138335), (730, 112184), (740, 110668), (758, 108040), (1168, 70115), (1460, 56092), (1480, 55334), (1516, 54020), (1895, 43216), (2701, 30320), (2920, 28046), (2960, 27667), (3032, 27010), (3790, 21608), (5402, 15160), (5840, 14023), (6064, 13505), (7580, 10804)]