21388698

素因数分解:

$2^1\times 3^4\times {\mathrm{31}}^1\times {\mathrm{4259}}^1$

素因数の和:4304

約数の個数: 40

約数和(自身を含む): 49484160

約数和(自身を除く): 28095462

約数列:

[1, 2, 3, 6, 9, 18, 27, 31, 54, 62, 81, 93, 162, 186, 279, 558, 837, 1674, 2511, 4259, 5022, 8518, 12777, 25554, 38331, 76662, 114993, 132029, 229986, 264058, 344979, 396087, 689958, 792174, 1188261, 2376522, 3564783, 7129566, 10694349, 21388698]

約数ペア:

[(1, 21388698), (2, 10694349), (3, 7129566), (6, 3564783), (9, 2376522), (18, 1188261), (27, 792174), (31, 689958), (54, 396087), (62, 344979), (81, 264058), (93, 229986), (162, 132029), (186, 114993), (279, 76662), (558, 38331), (837, 25554), (1674, 12777), (2511, 8518), (4259, 5022)]