21803678

素因数分解:

$2^1\times {\mathrm{13}}^1\times {\mathrm{19}}^2\times {\mathrm{23}}^1\times {\mathrm{101}}^1$

素因数の和:177

約数の個数: 48

約数和(自身を含む): 39172896

約数和(自身を除く): 17369218

約数列:

[1, 2, 13, 19, 23, 26, 38, 46, 101, 202, 247, 299, 361, 437, 494, 598, 722, 874, 1313, 1919, 2323, 2626, 3838, 4646, 4693, 5681, 8303, 9386, 11362, 16606, 24947, 30199, 36461, 44137, 49894, 60398, 72922, 88274, 107939, 215878, 473993, 573781, 838603, 947986, 1147562, 1677206, 10901839, 21803678]

約数ペア:

[(1, 21803678), (2, 10901839), (13, 1677206), (19, 1147562), (23, 947986), (26, 838603), (38, 573781), (46, 473993), (101, 215878), (202, 107939), (247, 88274), (299, 72922), (361, 60398), (437, 49894), (494, 44137), (598, 36461), (722, 30199), (874, 24947), (1313, 16606), (1919, 11362), (2323, 9386), (2626, 8303), (3838, 5681), (4646, 4693)]