261580280

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{503039}}^1$

素因数の和:503063

約数の個数: 32

約数和(自身を含む): 633830400

約数和(自身を除く): 372250120

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 260, 520, 503039, 1006078, 2012156, 2515195, 4024312, 5030390, 6539507, 10060780, 13079014, 20121560, 26158028, 32697535, 52316056, 65395070, 130790140, 261580280]

約数ペア:

[(1, 261580280), (2, 130790140), (4, 65395070), (5, 52316056), (8, 32697535), (10, 26158028), (13, 20121560), (20, 13079014), (26, 10060780), (40, 6539507), (52, 5030390), (65, 4024312), (104, 2515195), (130, 2012156), (260, 1006078), (520, 503039)]