21538400

素因数分解:

$2^5\times 5^2\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{109}}^1$

素因数の和:161

約数の個数: 144

約数和(自身を含む): 60152400

約数和(自身を除く): 38614000

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 19, 20, 25, 26, 32, 38, 40, 50, 52, 65, 76, 80, 95, 100, 104, 109, 130, 152, 160, 190, 200, 208, 218, 247, 260, 304, 325, 380, 400, 416, 436, 475, 494, 520, 545, 608, 650, 760, 800, 872, 950, 988, 1040, 1090, 1235, 1300, 1417, 1520, 1744, 1900, 1976, 2071, 2080, 2180, 2470, 2600, 2725, 2834, 3040, 3488, 3800, 3952, 4142, 4360, 4940, 5200, 5450, 5668, 6175, 7085, 7600, 7904, 8284, 8720, 9880, 10355, 10400, 10900, 11336, 12350, 14170, 15200, 16568, 17440, 19760, 20710, 21800, 22672, 24700, 26923, 28340, 33136, 35425, 39520, 41420, 43600, 45344, 49400, 51775, 53846, 56680, 66272, 70850, 82840, 87200, 98800, 103550, 107692, 113360, 134615, 141700, 165680, 197600, 207100, 215384, 226720, 269230, 283400, 331360, 414200, 430768, 538460, 566800, 673075, 828400, 861536, 1076920, 1133600, 1346150, 1656800, 2153840, 2692300, 4307680, 5384600, 10769200, 21538400]

約数ペア:

[(1, 21538400), (2, 10769200), (4, 5384600), (5, 4307680), (8, 2692300), (10, 2153840), (13, 1656800), (16, 1346150), (19, 1133600), (20, 1076920), (25, 861536), (26, 828400), (32, 673075), (38, 566800), (40, 538460), (50, 430768), (52, 414200), (65, 331360), (76, 283400), (80, 269230), (95, 226720), (100, 215384), (104, 207100), (109, 197600), (130, 165680), (152, 141700), (160, 134615), (190, 113360), (200, 107692), (208, 103550), (218, 98800), (247, 87200), (260, 82840), (304, 70850), (325, 66272), (380, 56680), (400, 53846), (416, 51775), (436, 49400), (475, 45344), (494, 43600), (520, 41420), (545, 39520), (608, 35425), (650, 33136), (760, 28340), (800, 26923), (872, 24700), (950, 22672), (988, 21800), (1040, 20710), (1090, 19760), (1235, 17440), (1300, 16568), (1417, 15200), (1520, 14170), (1744, 12350), (1900, 11336), (1976, 10900), (2071, 10400), (2080, 10355), (2180, 9880), (2470, 8720), (2600, 8284), (2725, 7904), (2834, 7600), (3040, 7085), (3488, 6175), (3800, 5668), (3952, 5450), (4142, 5200), (4360, 4940)]