261387040

素因数分解:

$2^5\times 5^1\times {\mathrm{31}}^1\times {\mathrm{151}}^1\times {\mathrm{349}}^1$

素因数の和:546

約数の個数: 96

約数和(自身を含む): 643507200

約数和(自身を除く): 382120160

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 32, 40, 62, 80, 124, 151, 155, 160, 248, 302, 310, 349, 496, 604, 620, 698, 755, 992, 1208, 1240, 1396, 1510, 1745, 2416, 2480, 2792, 3020, 3490, 4681, 4832, 4960, 5584, 6040, 6980, 9362, 10819, 11168, 12080, 13960, 18724, 21638, 23405, 24160, 27920, 37448, 43276, 46810, 52699, 54095, 55840, 74896, 86552, 93620, 105398, 108190, 149792, 173104, 187240, 210796, 216380, 263495, 346208, 374480, 421592, 432760, 526990, 748960, 843184, 865520, 1053980, 1633669, 1686368, 1731040, 2107960, 3267338, 4215920, 6534676, 8168345, 8431840, 13069352, 16336690, 26138704, 32673380, 52277408, 65346760, 130693520, 261387040]

約数ペア:

[(1, 261387040), (2, 130693520), (4, 65346760), (5, 52277408), (8, 32673380), (10, 26138704), (16, 16336690), (20, 13069352), (31, 8431840), (32, 8168345), (40, 6534676), (62, 4215920), (80, 3267338), (124, 2107960), (151, 1731040), (155, 1686368), (160, 1633669), (248, 1053980), (302, 865520), (310, 843184), (349, 748960), (496, 526990), (604, 432760), (620, 421592), (698, 374480), (755, 346208), (992, 263495), (1208, 216380), (1240, 210796), (1396, 187240), (1510, 173104), (1745, 149792), (2416, 108190), (2480, 105398), (2792, 93620), (3020, 86552), (3490, 74896), (4681, 55840), (4832, 54095), (4960, 52699), (5584, 46810), (6040, 43276), (6980, 37448), (9362, 27920), (10819, 24160), (11168, 23405), (12080, 21638), (13960, 18724)]