20690110

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{71}}^1\times {\mathrm{181}}^1$

素因数の和:289

約数の個数: 64

約数和(自身を含む): 45287424

約数和(自身を除く): 24597314

約数列:

[1, 2, 5, 7, 10, 14, 23, 35, 46, 70, 71, 115, 142, 161, 181, 230, 322, 355, 362, 497, 710, 805, 905, 994, 1267, 1610, 1633, 1810, 2485, 2534, 3266, 4163, 4970, 6335, 8165, 8326, 11431, 12670, 12851, 16330, 20815, 22862, 25702, 29141, 41630, 57155, 58282, 64255, 89957, 114310, 128510, 145705, 179914, 291410, 295573, 449785, 591146, 899570, 1477865, 2069011, 2955730, 4138022, 10345055, 20690110]

約数ペア:

[(1, 20690110), (2, 10345055), (5, 4138022), (7, 2955730), (10, 2069011), (14, 1477865), (23, 899570), (35, 591146), (46, 449785), (70, 295573), (71, 291410), (115, 179914), (142, 145705), (161, 128510), (181, 114310), (230, 89957), (322, 64255), (355, 58282), (362, 57155), (497, 41630), (710, 29141), (805, 25702), (905, 22862), (994, 20815), (1267, 16330), (1610, 12851), (1633, 12670), (1810, 11431), (2485, 8326), (2534, 8165), (3266, 6335), (4163, 4970)]