208487840

素因数分解:

$2^5\times 5^1\times {\mathrm{11}}^4\times {\mathrm{89}}^1$

素因数の和:148

約数の個数: 120

約数和(自身を含む): 547892100

約数和(自身を除く): 339404260

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 32, 40, 44, 55, 80, 88, 89, 110, 121, 160, 176, 178, 220, 242, 352, 356, 440, 445, 484, 605, 712, 880, 890, 968, 979, 1210, 1331, 1424, 1760, 1780, 1936, 1958, 2420, 2662, 2848, 3560, 3872, 3916, 4840, 4895, 5324, 6655, 7120, 7832, 9680, 9790, 10648, 10769, 13310, 14240, 14641, 15664, 19360, 19580, 21296, 21538, 26620, 29282, 31328, 39160, 42592, 43076, 53240, 53845, 58564, 73205, 78320, 86152, 106480, 107690, 117128, 118459, 146410, 156640, 172304, 212960, 215380, 234256, 236918, 292820, 344608, 430760, 468512, 473836, 585640, 592295, 861520, 947672, 1171280, 1184590, 1303049, 1723040, 1895344, 2342560, 2369180, 2606098, 3790688, 4738360, 5212196, 6515245, 9476720, 10424392, 13030490, 18953440, 20848784, 26060980, 41697568, 52121960, 104243920, 208487840]

約数ペア:

[(1, 208487840), (2, 104243920), (4, 52121960), (5, 41697568), (8, 26060980), (10, 20848784), (11, 18953440), (16, 13030490), (20, 10424392), (22, 9476720), (32, 6515245), (40, 5212196), (44, 4738360), (55, 3790688), (80, 2606098), (88, 2369180), (89, 2342560), (110, 1895344), (121, 1723040), (160, 1303049), (176, 1184590), (178, 1171280), (220, 947672), (242, 861520), (352, 592295), (356, 585640), (440, 473836), (445, 468512), (484, 430760), (605, 344608), (712, 292820), (880, 236918), (890, 234256), (968, 215380), (979, 212960), (1210, 172304), (1331, 156640), (1424, 146410), (1760, 118459), (1780, 117128), (1936, 107690), (1958, 106480), (2420, 86152), (2662, 78320), (2848, 73205), (3560, 58564), (3872, 53845), (3916, 53240), (4840, 43076), (4895, 42592), (5324, 39160), (6655, 31328), (7120, 29282), (7832, 26620), (9680, 21538), (9790, 21296), (10648, 19580), (10769, 19360), (13310, 15664), (14240, 14641)]