128792360

素因数分解:

$2^3\times 5^1\times {\mathrm{181}}^1\times {\mathrm{17789}}^1$

素因数の和:17981

約数の個数: 32

約数和(自身を含む): 291400200

約数和(自身を除く): 162607840

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 181, 362, 724, 905, 1448, 1810, 3620, 7240, 17789, 35578, 71156, 88945, 142312, 177890, 355780, 711560, 3219809, 6439618, 12879236, 16099045, 25758472, 32198090, 64396180, 128792360]

約数ペア:

[(1, 128792360), (2, 64396180), (4, 32198090), (5, 25758472), (8, 16099045), (10, 12879236), (20, 6439618), (40, 3219809), (181, 711560), (362, 355780), (724, 177890), (905, 142312), (1448, 88945), (1810, 71156), (3620, 35578), (7240, 17789)]