21873880

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{78121}}^1$

素因数の和:78139

約数の個数: 32

約数和(自身を含む): 56247840

約数和(自身を除く): 34373960

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 78121, 156242, 312484, 390605, 546847, 624968, 781210, 1093694, 1562420, 2187388, 2734235, 3124840, 4374776, 5468470, 10936940, 21873880]

約数ペア:

[(1, 21873880), (2, 10936940), (4, 5468470), (5, 4374776), (7, 3124840), (8, 2734235), (10, 2187388), (14, 1562420), (20, 1093694), (28, 781210), (35, 624968), (40, 546847), (56, 390605), (70, 312484), (140, 156242), (280, 78121)]