20508729428

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{43}}^1\times {\mathrm{570511}}^1$

素因数の和:570588

約数の個数: 48

約数和(自身を含む): 42172247040

約数和(自身を除く): 21663517612

約数列:

[1, 2, 4, 11, 19, 22, 38, 43, 44, 76, 86, 172, 209, 418, 473, 817, 836, 946, 1634, 1892, 3268, 8987, 17974, 35948, 570511, 1141022, 2282044, 6275621, 10839709, 12551242, 21679418, 24531973, 25102484, 43358836, 49063946, 98127892, 119236799, 238473598, 269851703, 466107487, 476947196, 539703406, 932214974, 1079406812, 1864429948, 5127182357, 10254364714, 20508729428]

約数ペア:

[(1, 20508729428), (2, 10254364714), (4, 5127182357), (11, 1864429948), (19, 1079406812), (22, 932214974), (38, 539703406), (43, 476947196), (44, 466107487), (76, 269851703), (86, 238473598), (172, 119236799), (209, 98127892), (418, 49063946), (473, 43358836), (817, 25102484), (836, 24531973), (946, 21679418), (1634, 12551242), (1892, 10839709), (3268, 6275621), (8987, 2282044), (17974, 1141022), (35948, 570511)]