21901040

素因数分解:

$2^4\times 5^1\times 7^2\times {\mathrm{37}}^1\times {\mathrm{151}}^1$

素因数の和:215

約数の個数: 120

約数和(自身を含む): 61237152

約数和(自身を除く): 39336112

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 37, 40, 49, 56, 70, 74, 80, 98, 112, 140, 148, 151, 185, 196, 245, 259, 280, 296, 302, 370, 392, 490, 518, 560, 592, 604, 740, 755, 784, 980, 1036, 1057, 1208, 1295, 1480, 1510, 1813, 1960, 2072, 2114, 2416, 2590, 2960, 3020, 3626, 3920, 4144, 4228, 5180, 5285, 5587, 6040, 7252, 7399, 8456, 9065, 10360, 10570, 11174, 12080, 14504, 14798, 16912, 18130, 20720, 21140, 22348, 27935, 29008, 29596, 36260, 36995, 39109, 42280, 44696, 55870, 59192, 72520, 73990, 78218, 84560, 89392, 111740, 118384, 145040, 147980, 156436, 195545, 223480, 273763, 295960, 312872, 391090, 446960, 547526, 591920, 625744, 782180, 1095052, 1368815, 1564360, 2190104, 2737630, 3128720, 4380208, 5475260, 10950520, 21901040]

約数ペア:

[(1, 21901040), (2, 10950520), (4, 5475260), (5, 4380208), (7, 3128720), (8, 2737630), (10, 2190104), (14, 1564360), (16, 1368815), (20, 1095052), (28, 782180), (35, 625744), (37, 591920), (40, 547526), (49, 446960), (56, 391090), (70, 312872), (74, 295960), (80, 273763), (98, 223480), (112, 195545), (140, 156436), (148, 147980), (151, 145040), (185, 118384), (196, 111740), (245, 89392), (259, 84560), (280, 78218), (296, 73990), (302, 72520), (370, 59192), (392, 55870), (490, 44696), (518, 42280), (560, 39109), (592, 36995), (604, 36260), (740, 29596), (755, 29008), (784, 27935), (980, 22348), (1036, 21140), (1057, 20720), (1208, 18130), (1295, 16912), (1480, 14798), (1510, 14504), (1813, 12080), (1960, 11174), (2072, 10570), (2114, 10360), (2416, 9065), (2590, 8456), (2960, 7399), (3020, 7252), (3626, 6040), (3920, 5587), (4144, 5285), (4228, 5180)]