19952840

素因数分解:

$2^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{16091}}^1$

素因数の和:16133

約数の個数: 32

約数和(自身を含む): 46344960

約数和(自身を除く): 26392120

約数列:

[1, 2, 4, 5, 8, 10, 20, 31, 40, 62, 124, 155, 248, 310, 620, 1240, 16091, 32182, 64364, 80455, 128728, 160910, 321820, 498821, 643640, 997642, 1995284, 2494105, 3990568, 4988210, 9976420, 19952840]

約数ペア:

[(1, 19952840), (2, 9976420), (4, 4988210), (5, 3990568), (8, 2494105), (10, 1995284), (20, 997642), (31, 643640), (40, 498821), (62, 321820), (124, 160910), (155, 128728), (248, 80455), (310, 64364), (620, 32182), (1240, 16091)]