21252400

素因数分解:

$2^4\times 5^2\times {\mathrm{13}}^1\times {\mathrm{61}}^1\times {\mathrm{67}}^1$

素因数の和:159

約数の個数: 120

約数和(自身を含む): 56722064

約数和(自身を除く): 35469664

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 25, 26, 40, 50, 52, 61, 65, 67, 80, 100, 104, 122, 130, 134, 200, 208, 244, 260, 268, 305, 325, 335, 400, 488, 520, 536, 610, 650, 670, 793, 871, 976, 1040, 1072, 1220, 1300, 1340, 1525, 1586, 1675, 1742, 2440, 2600, 2680, 3050, 3172, 3350, 3484, 3965, 4087, 4355, 4880, 5200, 5360, 6100, 6344, 6700, 6968, 7930, 8174, 8710, 12200, 12688, 13400, 13936, 15860, 16348, 17420, 19825, 20435, 21775, 24400, 26800, 31720, 32696, 34840, 39650, 40870, 43550, 53131, 63440, 65392, 69680, 79300, 81740, 87100, 102175, 106262, 158600, 163480, 174200, 204350, 212524, 265655, 317200, 326960, 348400, 408700, 425048, 531310, 817400, 850096, 1062620, 1328275, 1634800, 2125240, 2656550, 4250480, 5313100, 10626200, 21252400]

約数ペア:

[(1, 21252400), (2, 10626200), (4, 5313100), (5, 4250480), (8, 2656550), (10, 2125240), (13, 1634800), (16, 1328275), (20, 1062620), (25, 850096), (26, 817400), (40, 531310), (50, 425048), (52, 408700), (61, 348400), (65, 326960), (67, 317200), (80, 265655), (100, 212524), (104, 204350), (122, 174200), (130, 163480), (134, 158600), (200, 106262), (208, 102175), (244, 87100), (260, 81740), (268, 79300), (305, 69680), (325, 65392), (335, 63440), (400, 53131), (488, 43550), (520, 40870), (536, 39650), (610, 34840), (650, 32696), (670, 31720), (793, 26800), (871, 24400), (976, 21775), (1040, 20435), (1072, 19825), (1220, 17420), (1300, 16348), (1340, 15860), (1525, 13936), (1586, 13400), (1675, 12688), (1742, 12200), (2440, 8710), (2600, 8174), (2680, 7930), (3050, 6968), (3172, 6700), (3350, 6344), (3484, 6100), (3965, 5360), (4087, 5200), (4355, 4880)]