21681730

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{73}}^1\times {\mathrm{4243}}^1$

素因数の和:4330

約数の個数: 32

約数和(自身を含む): 45224064

約数和(自身を除く): 23542334

約数列:

[1, 2, 5, 7, 10, 14, 35, 70, 73, 146, 365, 511, 730, 1022, 2555, 4243, 5110, 8486, 21215, 29701, 42430, 59402, 148505, 297010, 309739, 619478, 1548695, 2168173, 3097390, 4336346, 10840865, 21681730]

約数ペア:

[(1, 21681730), (2, 10840865), (5, 4336346), (7, 3097390), (10, 2168173), (14, 1548695), (35, 619478), (70, 309739), (73, 297010), (146, 148505), (365, 59402), (511, 42430), (730, 29701), (1022, 21215), (2555, 8486), (4243, 5110)]