20571811020

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{431}}^1\times {\mathrm{265169}}^1$

素因数の和:265615

約数の個数: 72

約数和(自身を含む): 62546178240

約数和(自身を除く): 41974367220

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 180, 431, 862, 1293, 1724, 2155, 2586, 3879, 4310, 5172, 6465, 7758, 8620, 12930, 15516, 19395, 25860, 38790, 77580, 265169, 530338, 795507, 1060676, 1325845, 1591014, 2386521, 2651690, 3182028, 3977535, 4773042, 5303380, 7955070, 9546084, 11932605, 15910140, 23865210, 47730420, 114287839, 228575678, 342863517, 457151356, 571439195, 685727034, 1028590551, 1142878390, 1371454068, 1714317585, 2057181102, 2285756780, 3428635170, 4114362204, 5142952755, 6857270340, 10285905510, 20571811020]

約数ペア:

[(1, 20571811020), (2, 10285905510), (3, 6857270340), (4, 5142952755), (5, 4114362204), (6, 3428635170), (9, 2285756780), (10, 2057181102), (12, 1714317585), (15, 1371454068), (18, 1142878390), (20, 1028590551), (30, 685727034), (36, 571439195), (45, 457151356), (60, 342863517), (90, 228575678), (180, 114287839), (431, 47730420), (862, 23865210), (1293, 15910140), (1724, 11932605), (2155, 9546084), (2586, 7955070), (3879, 5303380), (4310, 4773042), (5172, 3977535), (6465, 3182028), (7758, 2651690), (8620, 2386521), (12930, 1591014), (15516, 1325845), (19395, 1060676), (25860, 795507), (38790, 530338), (77580, 265169)]