21973520

素因数分解:

$2^4\times 5^1\times {\mathrm{17}}^1\times {\mathrm{107}}^1\times {\mathrm{151}}^1$

素因数の和:288

約数の個数: 80

約数和(自身を含む): 54960768

約数和(自身を除く): 32987248

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 34, 40, 68, 80, 85, 107, 136, 151, 170, 214, 272, 302, 340, 428, 535, 604, 680, 755, 856, 1070, 1208, 1360, 1510, 1712, 1819, 2140, 2416, 2567, 3020, 3638, 4280, 5134, 6040, 7276, 8560, 9095, 10268, 12080, 12835, 14552, 16157, 18190, 20536, 25670, 29104, 32314, 36380, 41072, 51340, 64628, 72760, 80785, 102680, 129256, 145520, 161570, 205360, 258512, 274669, 323140, 549338, 646280, 1098676, 1292560, 1373345, 2197352, 2746690, 4394704, 5493380, 10986760, 21973520]

約数ペア:

[(1, 21973520), (2, 10986760), (4, 5493380), (5, 4394704), (8, 2746690), (10, 2197352), (16, 1373345), (17, 1292560), (20, 1098676), (34, 646280), (40, 549338), (68, 323140), (80, 274669), (85, 258512), (107, 205360), (136, 161570), (151, 145520), (170, 129256), (214, 102680), (272, 80785), (302, 72760), (340, 64628), (428, 51340), (535, 41072), (604, 36380), (680, 32314), (755, 29104), (856, 25670), (1070, 20536), (1208, 18190), (1360, 16157), (1510, 14552), (1712, 12835), (1819, 12080), (2140, 10268), (2416, 9095), (2567, 8560), (3020, 7276), (3638, 6040), (4280, 5134)]