217690680

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{31}}^1\times {\mathrm{139}}^1\times {\mathrm{421}}^1$

素因数の和:605

約数の個数: 128

約数和(自身を含む): 680601600

約数和(自身を除く): 462910920

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 31, 40, 60, 62, 93, 120, 124, 139, 155, 186, 248, 278, 310, 372, 417, 421, 465, 556, 620, 695, 744, 834, 842, 930, 1112, 1240, 1263, 1390, 1668, 1684, 1860, 2085, 2105, 2526, 2780, 3336, 3368, 3720, 4170, 4210, 4309, 5052, 5560, 6315, 8340, 8420, 8618, 10104, 12630, 12927, 13051, 16680, 16840, 17236, 21545, 25260, 25854, 26102, 34472, 39153, 43090, 50520, 51708, 52204, 58519, 64635, 65255, 78306, 86180, 103416, 104408, 117038, 129270, 130510, 156612, 172360, 175557, 195765, 234076, 258540, 261020, 292595, 313224, 351114, 391530, 468152, 517080, 522040, 585190, 702228, 783060, 877785, 1170380, 1404456, 1566120, 1755570, 1814089, 2340760, 3511140, 3628178, 5442267, 7022280, 7256356, 9070445, 10884534, 14512712, 18140890, 21769068, 27211335, 36281780, 43538136, 54422670, 72563560, 108845340, 217690680]

約数ペア:

[(1, 217690680), (2, 108845340), (3, 72563560), (4, 54422670), (5, 43538136), (6, 36281780), (8, 27211335), (10, 21769068), (12, 18140890), (15, 14512712), (20, 10884534), (24, 9070445), (30, 7256356), (31, 7022280), (40, 5442267), (60, 3628178), (62, 3511140), (93, 2340760), (120, 1814089), (124, 1755570), (139, 1566120), (155, 1404456), (186, 1170380), (248, 877785), (278, 783060), (310, 702228), (372, 585190), (417, 522040), (421, 517080), (465, 468152), (556, 391530), (620, 351114), (695, 313224), (744, 292595), (834, 261020), (842, 258540), (930, 234076), (1112, 195765), (1240, 175557), (1263, 172360), (1390, 156612), (1668, 130510), (1684, 129270), (1860, 117038), (2085, 104408), (2105, 103416), (2526, 86180), (2780, 78306), (3336, 65255), (3368, 64635), (3720, 58519), (4170, 52204), (4210, 51708), (4309, 50520), (5052, 43090), (5560, 39153), (6315, 34472), (8340, 26102), (8420, 25854), (8618, 25260), (10104, 21545), (12630, 17236), (12927, 16840), (13051, 16680)]