17961965

素因数分解:

$5^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{53}}^1\times {\mathrm{421}}^1$

素因数の和:509

約数の個数: 32

約数和(自身を含む): 26251776

約数和(自身を除く): 8289811

約数列:

[1, 5, 7, 23, 35, 53, 115, 161, 265, 371, 421, 805, 1219, 1855, 2105, 2947, 6095, 8533, 9683, 14735, 22313, 42665, 48415, 67781, 111565, 156191, 338905, 513199, 780955, 2565995, 3592393, 17961965]

約数ペア:

[(1, 17961965), (5, 3592393), (7, 2565995), (23, 780955), (35, 513199), (53, 338905), (115, 156191), (161, 111565), (265, 67781), (371, 48415), (421, 42665), (805, 22313), (1219, 14735), (1855, 9683), (2105, 8533), (2947, 6095)]