216881840

素因数分解:

$2^4\times 5^1\times 7^2\times {\mathrm{61}}^1\times {\mathrm{907}}^1$

素因数の和:995

約数の個数: 120

約数和(自身を含む): 596850192

約数和(自身を除く): 379968352

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 49, 56, 61, 70, 80, 98, 112, 122, 140, 196, 244, 245, 280, 305, 392, 427, 488, 490, 560, 610, 784, 854, 907, 976, 980, 1220, 1708, 1814, 1960, 2135, 2440, 2989, 3416, 3628, 3920, 4270, 4535, 4880, 5978, 6349, 6832, 7256, 8540, 9070, 11956, 12698, 14512, 14945, 17080, 18140, 23912, 25396, 29890, 31745, 34160, 36280, 44443, 47824, 50792, 55327, 59780, 63490, 72560, 88886, 101584, 110654, 119560, 126980, 177772, 221308, 222215, 239120, 253960, 276635, 355544, 387289, 442616, 444430, 507920, 553270, 711088, 774578, 885232, 888860, 1106540, 1549156, 1777720, 1936445, 2213080, 2711023, 3098312, 3555440, 3872890, 4426160, 5422046, 6196624, 7745780, 10844092, 13555115, 15491560, 21688184, 27110230, 30983120, 43376368, 54220460, 108440920, 216881840]

約数ペア:

[(1, 216881840), (2, 108440920), (4, 54220460), (5, 43376368), (7, 30983120), (8, 27110230), (10, 21688184), (14, 15491560), (16, 13555115), (20, 10844092), (28, 7745780), (35, 6196624), (40, 5422046), (49, 4426160), (56, 3872890), (61, 3555440), (70, 3098312), (80, 2711023), (98, 2213080), (112, 1936445), (122, 1777720), (140, 1549156), (196, 1106540), (244, 888860), (245, 885232), (280, 774578), (305, 711088), (392, 553270), (427, 507920), (488, 444430), (490, 442616), (560, 387289), (610, 355544), (784, 276635), (854, 253960), (907, 239120), (976, 222215), (980, 221308), (1220, 177772), (1708, 126980), (1814, 119560), (1960, 110654), (2135, 101584), (2440, 88886), (2989, 72560), (3416, 63490), (3628, 59780), (3920, 55327), (4270, 50792), (4535, 47824), (4880, 44443), (5978, 36280), (6349, 34160), (6832, 31745), (7256, 29890), (8540, 25396), (9070, 23912), (11956, 18140), (12698, 17080), (14512, 14945)]