19919578

素因数分解:

$2^1\times 7^2\times {\mathrm{29}}^1\times {\mathrm{43}}^1\times {\mathrm{163}}^1$

素因数の和:251

約数の個数: 48

約数和(自身を含む): 37018080

約数和(自身を除く): 17098502

約数列:

[1, 2, 7, 14, 29, 43, 49, 58, 86, 98, 163, 203, 301, 326, 406, 602, 1141, 1247, 1421, 2107, 2282, 2494, 2842, 4214, 4727, 7009, 7987, 8729, 9454, 14018, 15974, 17458, 33089, 49063, 61103, 66178, 98126, 122206, 203261, 231623, 343441, 406522, 463246, 686882, 1422827, 2845654, 9959789, 19919578]

約数ペア:

[(1, 19919578), (2, 9959789), (7, 2845654), (14, 1422827), (29, 686882), (43, 463246), (49, 406522), (58, 343441), (86, 231623), (98, 203261), (163, 122206), (203, 98126), (301, 66178), (326, 61103), (406, 49063), (602, 33089), (1141, 17458), (1247, 15974), (1421, 14018), (2107, 9454), (2282, 8729), (2494, 7987), (2842, 7009), (4214, 4727)]