20903328

素因数分解:

$2^5\times 3^2\times {\mathrm{181}}^1\times {\mathrm{401}}^1$

素因数の和:598

約数の個数: 72

約数和(自身を含む): 59921316

約数和(自身を除く): 39017988

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 16, 18, 24, 32, 36, 48, 72, 96, 144, 181, 288, 362, 401, 543, 724, 802, 1086, 1203, 1448, 1604, 1629, 2172, 2406, 2896, 3208, 3258, 3609, 4344, 4812, 5792, 6416, 6516, 7218, 8688, 9624, 12832, 13032, 14436, 17376, 19248, 26064, 28872, 38496, 52128, 57744, 72581, 115488, 145162, 217743, 290324, 435486, 580648, 653229, 870972, 1161296, 1306458, 1741944, 2322592, 2612916, 3483888, 5225832, 6967776, 10451664, 20903328]

約数ペア:

[(1, 20903328), (2, 10451664), (3, 6967776), (4, 5225832), (6, 3483888), (8, 2612916), (9, 2322592), (12, 1741944), (16, 1306458), (18, 1161296), (24, 870972), (32, 653229), (36, 580648), (48, 435486), (72, 290324), (96, 217743), (144, 145162), (181, 115488), (288, 72581), (362, 57744), (401, 52128), (543, 38496), (724, 28872), (802, 26064), (1086, 19248), (1203, 17376), (1448, 14436), (1604, 13032), (1629, 12832), (2172, 9624), (2406, 8688), (2896, 7218), (3208, 6516), (3258, 6416), (3609, 5792), (4344, 4812)]