217863040

素因数分解:

$2^7\times 5^1\times {\mathrm{31}}^1\times {\mathrm{79}}^1\times {\mathrm{139}}^1$

素因数の和:268

約数の個数: 128

約数和(自身を含む): 548352000

約数和(自身を除く): 330488960

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 32, 40, 62, 64, 79, 80, 124, 128, 139, 155, 158, 160, 248, 278, 310, 316, 320, 395, 496, 556, 620, 632, 640, 695, 790, 992, 1112, 1240, 1264, 1390, 1580, 1984, 2224, 2449, 2480, 2528, 2780, 3160, 3968, 4309, 4448, 4898, 4960, 5056, 5560, 6320, 8618, 8896, 9796, 9920, 10112, 10981, 11120, 12245, 12640, 17236, 17792, 19592, 19840, 21545, 21962, 22240, 24490, 25280, 34472, 39184, 43090, 43924, 44480, 48980, 50560, 54905, 68944, 78368, 86180, 87848, 88960, 97960, 109810, 137888, 156736, 172360, 175696, 195920, 219620, 275776, 313472, 340411, 344720, 351392, 391840, 439240, 551552, 680822, 689440, 702784, 783680, 878480, 1361644, 1378880, 1405568, 1567360, 1702055, 1756960, 2723288, 2757760, 3404110, 3513920, 5446576, 6808220, 7027840, 10893152, 13616440, 21786304, 27232880, 43572608, 54465760, 108931520, 217863040]

約数ペア:

[(1, 217863040), (2, 108931520), (4, 54465760), (5, 43572608), (8, 27232880), (10, 21786304), (16, 13616440), (20, 10893152), (31, 7027840), (32, 6808220), (40, 5446576), (62, 3513920), (64, 3404110), (79, 2757760), (80, 2723288), (124, 1756960), (128, 1702055), (139, 1567360), (155, 1405568), (158, 1378880), (160, 1361644), (248, 878480), (278, 783680), (310, 702784), (316, 689440), (320, 680822), (395, 551552), (496, 439240), (556, 391840), (620, 351392), (632, 344720), (640, 340411), (695, 313472), (790, 275776), (992, 219620), (1112, 195920), (1240, 175696), (1264, 172360), (1390, 156736), (1580, 137888), (1984, 109810), (2224, 97960), (2449, 88960), (2480, 87848), (2528, 86180), (2780, 78368), (3160, 68944), (3968, 54905), (4309, 50560), (4448, 48980), (4898, 44480), (4960, 43924), (5056, 43090), (5560, 39184), (6320, 34472), (8618, 25280), (8896, 24490), (9796, 22240), (9920, 21962), (10112, 21545), (10981, 19840), (11120, 19592), (12245, 17792), (12640, 17236)]