21174400

素因数分解:

$2^7\times 5^2\times {\mathrm{13}}^1\times {\mathrm{509}}^1$

素因数の和:546

約数の個数: 96

約数和(自身を含む): 56441700

約数和(自身を除く): 35267300

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 25, 26, 32, 40, 50, 52, 64, 65, 80, 100, 104, 128, 130, 160, 200, 208, 260, 320, 325, 400, 416, 509, 520, 640, 650, 800, 832, 1018, 1040, 1300, 1600, 1664, 2036, 2080, 2545, 2600, 3200, 4072, 4160, 5090, 5200, 6617, 8144, 8320, 10180, 10400, 12725, 13234, 16288, 20360, 20800, 25450, 26468, 32576, 33085, 40720, 41600, 50900, 52936, 65152, 66170, 81440, 101800, 105872, 132340, 162880, 165425, 203600, 211744, 264680, 325760, 330850, 407200, 423488, 529360, 661700, 814400, 846976, 1058720, 1323400, 1628800, 2117440, 2646800, 4234880, 5293600, 10587200, 21174400]

約数ペア:

[(1, 21174400), (2, 10587200), (4, 5293600), (5, 4234880), (8, 2646800), (10, 2117440), (13, 1628800), (16, 1323400), (20, 1058720), (25, 846976), (26, 814400), (32, 661700), (40, 529360), (50, 423488), (52, 407200), (64, 330850), (65, 325760), (80, 264680), (100, 211744), (104, 203600), (128, 165425), (130, 162880), (160, 132340), (200, 105872), (208, 101800), (260, 81440), (320, 66170), (325, 65152), (400, 52936), (416, 50900), (509, 41600), (520, 40720), (640, 33085), (650, 32576), (800, 26468), (832, 25450), (1018, 20800), (1040, 20360), (1300, 16288), (1600, 13234), (1664, 12725), (2036, 10400), (2080, 10180), (2545, 8320), (2600, 8144), (3200, 6617), (4072, 5200), (4160, 5090)]