21902080

素因数分解:

$2^8\times 5^1\times {\mathrm{71}}^1\times {\mathrm{241}}^1$

素因数の和:333

約数の個数: 72

約数和(自身を含む): 53421984

約数和(自身を除く): 31519904

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 71, 80, 128, 142, 160, 241, 256, 284, 320, 355, 482, 568, 640, 710, 964, 1136, 1205, 1280, 1420, 1928, 2272, 2410, 2840, 3856, 4544, 4820, 5680, 7712, 9088, 9640, 11360, 15424, 17111, 18176, 19280, 22720, 30848, 34222, 38560, 45440, 61696, 68444, 77120, 85555, 90880, 136888, 154240, 171110, 273776, 308480, 342220, 547552, 684440, 1095104, 1368880, 2190208, 2737760, 4380416, 5475520, 10951040, 21902080]

約数ペア:

[(1, 21902080), (2, 10951040), (4, 5475520), (5, 4380416), (8, 2737760), (10, 2190208), (16, 1368880), (20, 1095104), (32, 684440), (40, 547552), (64, 342220), (71, 308480), (80, 273776), (128, 171110), (142, 154240), (160, 136888), (241, 90880), (256, 85555), (284, 77120), (320, 68444), (355, 61696), (482, 45440), (568, 38560), (640, 34222), (710, 30848), (964, 22720), (1136, 19280), (1205, 18176), (1280, 17111), (1420, 15424), (1928, 11360), (2272, 9640), (2410, 9088), (2840, 7712), (3856, 5680), (4544, 4820)]