21359572

素因数分解:

$2^2\times {\mathrm{13}}^2\times {\mathrm{19}}^1\times {\mathrm{1663}}^1$

素因数の和:1712

約数の個数: 36

約数和(自身を含む): 42631680

約数和(自身を除く): 21272108

約数列:

[1, 2, 4, 13, 19, 26, 38, 52, 76, 169, 247, 338, 494, 676, 988, 1663, 3211, 3326, 6422, 6652, 12844, 21619, 31597, 43238, 63194, 86476, 126388, 281047, 410761, 562094, 821522, 1124188, 1643044, 5339893, 10679786, 21359572]

約数ペア:

[(1, 21359572), (2, 10679786), (4, 5339893), (13, 1643044), (19, 1124188), (26, 821522), (38, 562094), (52, 410761), (76, 281047), (169, 126388), (247, 86476), (338, 63194), (494, 43238), (676, 31597), (988, 21619), (1663, 12844), (3211, 6652), (3326, 6422)]