20693640

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{61}}^1\times {\mathrm{257}}^1$

素因数の和:343

約数の個数: 128

約数和(自身を含む): 69102720

約数和(自身を除く): 48409080

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 11, 12, 15, 20, 22, 24, 30, 33, 40, 44, 55, 60, 61, 66, 88, 110, 120, 122, 132, 165, 183, 220, 244, 257, 264, 305, 330, 366, 440, 488, 514, 610, 660, 671, 732, 771, 915, 1028, 1220, 1285, 1320, 1342, 1464, 1542, 1830, 2013, 2056, 2440, 2570, 2684, 2827, 3084, 3355, 3660, 3855, 4026, 5140, 5368, 5654, 6168, 6710, 7320, 7710, 8052, 8481, 10065, 10280, 11308, 13420, 14135, 15420, 15677, 16104, 16962, 20130, 22616, 26840, 28270, 30840, 31354, 33924, 40260, 42405, 47031, 56540, 62708, 67848, 78385, 80520, 84810, 94062, 113080, 125416, 156770, 169620, 172447, 188124, 235155, 313540, 339240, 344894, 376248, 470310, 517341, 627080, 689788, 862235, 940620, 1034682, 1379576, 1724470, 1881240, 2069364, 2586705, 3448940, 4138728, 5173410, 6897880, 10346820, 20693640]

約数ペア:

[(1, 20693640), (2, 10346820), (3, 6897880), (4, 5173410), (5, 4138728), (6, 3448940), (8, 2586705), (10, 2069364), (11, 1881240), (12, 1724470), (15, 1379576), (20, 1034682), (22, 940620), (24, 862235), (30, 689788), (33, 627080), (40, 517341), (44, 470310), (55, 376248), (60, 344894), (61, 339240), (66, 313540), (88, 235155), (110, 188124), (120, 172447), (122, 169620), (132, 156770), (165, 125416), (183, 113080), (220, 94062), (244, 84810), (257, 80520), (264, 78385), (305, 67848), (330, 62708), (366, 56540), (440, 47031), (488, 42405), (514, 40260), (610, 33924), (660, 31354), (671, 30840), (732, 28270), (771, 26840), (915, 22616), (1028, 20130), (1220, 16962), (1285, 16104), (1320, 15677), (1342, 15420), (1464, 14135), (1542, 13420), (1830, 11308), (2013, 10280), (2056, 10065), (2440, 8481), (2570, 8052), (2684, 7710), (2827, 7320), (3084, 6710), (3355, 6168), (3660, 5654), (3855, 5368), (4026, 5140)]