19980459835

素因数分解:

$5^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{101}}^1\times {\mathrm{245747}}^1$

素因数の和:245883

約数の個数: 32

約数和(自身を含む): 28876372992

約数和(自身を除く): 8895913157

約数列:

[1, 5, 7, 23, 35, 101, 115, 161, 505, 707, 805, 2323, 3535, 11615, 16261, 81305, 245747, 1228735, 1720229, 5652181, 8601145, 24820447, 28260905, 39565267, 124102235, 173743129, 197826335, 570870281, 868715645, 2854351405, 3996091967, 19980459835]

約数ペア:

[(1, 19980459835), (5, 3996091967), (7, 2854351405), (23, 868715645), (35, 570870281), (101, 197826335), (115, 173743129), (161, 124102235), (505, 39565267), (707, 28260905), (805, 24820447), (2323, 8601145), (3535, 5652181), (11615, 1720229), (16261, 1228735), (81305, 245747)]