254736560

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{244939}}^1$

素因数の和:244965

約数の個数: 40

約数和(自身を含む): 637823760

約数和(自身を除く): 383087200

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 40, 52, 65, 80, 104, 130, 208, 260, 520, 1040, 244939, 489878, 979756, 1224695, 1959512, 2449390, 3184207, 3919024, 4898780, 6368414, 9797560, 12736828, 15921035, 19595120, 25473656, 31842070, 50947312, 63684140, 127368280, 254736560]

約数ペア:

[(1, 254736560), (2, 127368280), (4, 63684140), (5, 50947312), (8, 31842070), (10, 25473656), (13, 19595120), (16, 15921035), (20, 12736828), (26, 9797560), (40, 6368414), (52, 4898780), (65, 3919024), (80, 3184207), (104, 2449390), (130, 1959512), (208, 1224695), (260, 979756), (520, 489878), (1040, 244939)]