19989840

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{149}}^1$

素因数の和:221

約数の個数: 160

約数和(自身を含む): 68745600

約数和(自身を除く): 48755760

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 13, 15, 16, 20, 24, 26, 30, 39, 40, 43, 48, 52, 60, 65, 78, 80, 86, 104, 120, 129, 130, 149, 156, 172, 195, 208, 215, 240, 258, 260, 298, 312, 344, 390, 430, 447, 516, 520, 559, 596, 624, 645, 688, 745, 780, 860, 894, 1032, 1040, 1118, 1192, 1290, 1490, 1560, 1677, 1720, 1788, 1937, 2064, 2235, 2236, 2384, 2580, 2795, 2980, 3120, 3354, 3440, 3576, 3874, 4470, 4472, 5160, 5590, 5811, 5960, 6407, 6708, 7152, 7748, 8385, 8940, 8944, 9685, 10320, 11180, 11622, 11920, 12814, 13416, 15496, 16770, 17880, 19221, 19370, 22360, 23244, 25628, 26832, 29055, 30992, 32035, 33540, 35760, 38442, 38740, 44720, 46488, 51256, 58110, 64070, 67080, 76884, 77480, 83291, 92976, 96105, 102512, 116220, 128140, 134160, 153768, 154960, 166582, 192210, 232440, 249873, 256280, 307536, 333164, 384420, 416455, 464880, 499746, 512560, 666328, 768840, 832910, 999492, 1249365, 1332656, 1537680, 1665820, 1998984, 2498730, 3331640, 3997968, 4997460, 6663280, 9994920, 19989840]

約数ペア:

[(1, 19989840), (2, 9994920), (3, 6663280), (4, 4997460), (5, 3997968), (6, 3331640), (8, 2498730), (10, 1998984), (12, 1665820), (13, 1537680), (15, 1332656), (16, 1249365), (20, 999492), (24, 832910), (26, 768840), (30, 666328), (39, 512560), (40, 499746), (43, 464880), (48, 416455), (52, 384420), (60, 333164), (65, 307536), (78, 256280), (80, 249873), (86, 232440), (104, 192210), (120, 166582), (129, 154960), (130, 153768), (149, 134160), (156, 128140), (172, 116220), (195, 102512), (208, 96105), (215, 92976), (240, 83291), (258, 77480), (260, 76884), (298, 67080), (312, 64070), (344, 58110), (390, 51256), (430, 46488), (447, 44720), (516, 38740), (520, 38442), (559, 35760), (596, 33540), (624, 32035), (645, 30992), (688, 29055), (745, 26832), (780, 25628), (860, 23244), (894, 22360), (1032, 19370), (1040, 19221), (1118, 17880), (1192, 16770), (1290, 15496), (1490, 13416), (1560, 12814), (1677, 11920), (1720, 11622), (1788, 11180), (1937, 10320), (2064, 9685), (2235, 8944), (2236, 8940), (2384, 8385), (2580, 7748), (2795, 7152), (2980, 6708), (3120, 6407), (3354, 5960), (3440, 5811), (3576, 5590), (3874, 5160), (4470, 4472)]