20721698160

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{86340409}}^1$

素因数の和:86340425

約数の個数: 40

約数和(自身を含む): 64237265040

約数和(自身を除く): 43515566880

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 40, 48, 60, 80, 120, 240, 86340409, 172680818, 259021227, 345361636, 431702045, 518042454, 690723272, 863404090, 1036084908, 1295106135, 1381446544, 1726808180, 2072169816, 2590212270, 3453616360, 4144339632, 5180424540, 6907232720, 10360849080, 20721698160]

約数ペア:

[(1, 20721698160), (2, 10360849080), (3, 6907232720), (4, 5180424540), (5, 4144339632), (6, 3453616360), (8, 2590212270), (10, 2072169816), (12, 1726808180), (15, 1381446544), (16, 1295106135), (20, 1036084908), (24, 863404090), (30, 690723272), (40, 518042454), (48, 431702045), (60, 345361636), (80, 259021227), (120, 172680818), (240, 86340409)]