28163905

素因数分解:

$5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{191}}^1\times {\mathrm{383}}^1$

素因数の和:597

約数の個数: 32

約数和(自身を含む): 42467328

約数和(自身を除く): 14303423

約数列:

[1, 5, 7, 11, 35, 55, 77, 191, 383, 385, 955, 1337, 1915, 2101, 2681, 4213, 6685, 10505, 13405, 14707, 21065, 29491, 73153, 73535, 147455, 365765, 512071, 804683, 2560355, 4023415, 5632781, 28163905]

約数ペア:

[(1, 28163905), (5, 5632781), (7, 4023415), (11, 2560355), (35, 804683), (55, 512071), (77, 365765), (191, 147455), (383, 73535), (385, 73153), (955, 29491), (1337, 21065), (1915, 14707), (2101, 13405), (2681, 10505), (4213, 6685)]