20391720

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{109}}^1\times {\mathrm{1559}}^1$

素因数の和:1682

約数の個数: 64

約数和(自身を含む): 61776000

約数和(自身を除く): 41384280

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 40, 60, 109, 120, 218, 327, 436, 545, 654, 872, 1090, 1308, 1559, 1635, 2180, 2616, 3118, 3270, 4360, 4677, 6236, 6540, 7795, 9354, 12472, 13080, 15590, 18708, 23385, 31180, 37416, 46770, 62360, 93540, 169931, 187080, 339862, 509793, 679724, 849655, 1019586, 1359448, 1699310, 2039172, 2548965, 3398620, 4078344, 5097930, 6797240, 10195860, 20391720]

約数ペア:

[(1, 20391720), (2, 10195860), (3, 6797240), (4, 5097930), (5, 4078344), (6, 3398620), (8, 2548965), (10, 2039172), (12, 1699310), (15, 1359448), (20, 1019586), (24, 849655), (30, 679724), (40, 509793), (60, 339862), (109, 187080), (120, 169931), (218, 93540), (327, 62360), (436, 46770), (545, 37416), (654, 31180), (872, 23385), (1090, 18708), (1308, 15590), (1559, 13080), (1635, 12472), (2180, 9354), (2616, 7795), (3118, 6540), (3270, 6236), (4360, 4677)]