19922480

素因数分解:

$2^4\times 5^1\times {\mathrm{131}}^1\times {\mathrm{1901}}^1$

素因数の和:2045

約数の個数: 40

約数和(自身を含む): 46697904

約数和(自身を除く): 26775424

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 131, 262, 524, 655, 1048, 1310, 1901, 2096, 2620, 3802, 5240, 7604, 9505, 10480, 15208, 19010, 30416, 38020, 76040, 152080, 249031, 498062, 996124, 1245155, 1992248, 2490310, 3984496, 4980620, 9961240, 19922480]

約数ペア:

[(1, 19922480), (2, 9961240), (4, 4980620), (5, 3984496), (8, 2490310), (10, 1992248), (16, 1245155), (20, 996124), (40, 498062), (80, 249031), (131, 152080), (262, 76040), (524, 38020), (655, 30416), (1048, 19010), (1310, 15208), (1901, 10480), (2096, 9505), (2620, 7604), (3802, 5240)]