18953440

素因数分解:

$2^5\times 5^1\times {\mathrm{11}}^3\times {\mathrm{89}}^1$

素因数の和:137

約数の個数: 96

約数和(自身を含む): 49805280

約数和(自身を除く): 30851840

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, 15664, 19360, 19580, 21296, 21538, 26620, 31328, 39160, 42592, 43076, 53240, 53845, 78320, 86152, 106480, 107690, 118459, 156640, 172304, 212960, 215380, 236918, 344608, 430760, 473836, 592295, 861520, 947672, 1184590, 1723040, 1895344, 2369180, 3790688, 4738360, 9476720, 18953440]

約数ペア:

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