21491200

素因数分解:

$2^9\times 5^2\times {\mathrm{23}}^1\times {\mathrm{73}}^1$

素因数の和:124

約数の個数: 120

約数和(自身を含む): 56322288

約数和(自身を除く): 34831088

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 23, 25, 32, 40, 46, 50, 64, 73, 80, 92, 100, 115, 128, 146, 160, 184, 200, 230, 256, 292, 320, 365, 368, 400, 460, 512, 575, 584, 640, 730, 736, 800, 920, 1150, 1168, 1280, 1460, 1472, 1600, 1679, 1825, 1840, 2300, 2336, 2560, 2920, 2944, 3200, 3358, 3650, 3680, 4600, 4672, 5840, 5888, 6400, 6716, 7300, 7360, 8395, 9200, 9344, 11680, 11776, 12800, 13432, 14600, 14720, 16790, 18400, 18688, 23360, 26864, 29200, 29440, 33580, 36800, 37376, 41975, 46720, 53728, 58400, 58880, 67160, 73600, 83950, 93440, 107456, 116800, 134320, 147200, 167900, 186880, 214912, 233600, 268640, 294400, 335800, 429824, 467200, 537280, 671600, 859648, 934400, 1074560, 1343200, 2149120, 2686400, 4298240, 5372800, 10745600, 21491200]

約数ペア:

[(1, 21491200), (2, 10745600), (4, 5372800), (5, 4298240), (8, 2686400), (10, 2149120), (16, 1343200), (20, 1074560), (23, 934400), (25, 859648), (32, 671600), (40, 537280), (46, 467200), (50, 429824), (64, 335800), (73, 294400), (80, 268640), (92, 233600), (100, 214912), (115, 186880), (128, 167900), (146, 147200), (160, 134320), (184, 116800), (200, 107456), (230, 93440), (256, 83950), (292, 73600), (320, 67160), (365, 58880), (368, 58400), (400, 53728), (460, 46720), (512, 41975), (575, 37376), (584, 36800), (640, 33580), (730, 29440), (736, 29200), (800, 26864), (920, 23360), (1150, 18688), (1168, 18400), (1280, 16790), (1460, 14720), (1472, 14600), (1600, 13432), (1679, 12800), (1825, 11776), (1840, 11680), (2300, 9344), (2336, 9200), (2560, 8395), (2920, 7360), (2944, 7300), (3200, 6716), (3358, 6400), (3650, 5888), (3680, 5840), (4600, 4672)]