18737120

素因数分解:

$2^5\times 5^1\times {\mathrm{181}}^1\times {\mathrm{647}}^1$

素因数の和:843

約数の個数: 48

約数和(自身を含む): 44579808

約数和(自身を除く): 25842688

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 160, 181, 362, 647, 724, 905, 1294, 1448, 1810, 2588, 2896, 3235, 3620, 5176, 5792, 6470, 7240, 10352, 12940, 14480, 20704, 25880, 28960, 51760, 103520, 117107, 234214, 468428, 585535, 936856, 1171070, 1873712, 2342140, 3747424, 4684280, 9368560, 18737120]

約数ペア:

[(1, 18737120), (2, 9368560), (4, 4684280), (5, 3747424), (8, 2342140), (10, 1873712), (16, 1171070), (20, 936856), (32, 585535), (40, 468428), (80, 234214), (160, 117107), (181, 103520), (362, 51760), (647, 28960), (724, 25880), (905, 20704), (1294, 14480), (1448, 12940), (1810, 10352), (2588, 7240), (2896, 6470), (3235, 5792), (3620, 5176)]