20948925

素因数分解:

$3^1\times 5^2\times {\mathrm{19}}^1\times {\mathrm{61}}^1\times {\mathrm{241}}^1$

素因数の和:334

約数の個数: 48

約数和(自身を含む): 37209920

約数和(自身を除く): 16260995

約数列:

[1, 3, 5, 15, 19, 25, 57, 61, 75, 95, 183, 241, 285, 305, 475, 723, 915, 1159, 1205, 1425, 1525, 3477, 3615, 4575, 4579, 5795, 6025, 13737, 14701, 17385, 18075, 22895, 28975, 44103, 68685, 73505, 86925, 114475, 220515, 279319, 343425, 367525, 837957, 1102575, 1396595, 4189785, 6982975, 20948925]

約数ペア:

[(1, 20948925), (3, 6982975), (5, 4189785), (15, 1396595), (19, 1102575), (25, 837957), (57, 367525), (61, 343425), (75, 279319), (95, 220515), (183, 114475), (241, 86925), (285, 73505), (305, 68685), (475, 44103), (723, 28975), (915, 22895), (1159, 18075), (1205, 17385), (1425, 14701), (1525, 13737), (3477, 6025), (3615, 5795), (4575, 4579)]