421553920

素因数分解:

$2^8\times 5^1\times {\mathrm{61}}^1\times {\mathrm{5399}}^1$

素因数の和:5481

約数の個数: 72

約数和(自身を含む): 1026496800

約数和(自身を除く): 604942880

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 61, 64, 80, 122, 128, 160, 244, 256, 305, 320, 488, 610, 640, 976, 1220, 1280, 1952, 2440, 3904, 4880, 5399, 7808, 9760, 10798, 15616, 19520, 21596, 26995, 39040, 43192, 53990, 78080, 86384, 107980, 172768, 215960, 329339, 345536, 431920, 658678, 691072, 863840, 1317356, 1382144, 1646695, 1727680, 2634712, 3293390, 3455360, 5269424, 6586780, 6910720, 10538848, 13173560, 21077696, 26347120, 42155392, 52694240, 84310784, 105388480, 210776960, 421553920]

約数ペア:

[(1, 421553920), (2, 210776960), (4, 105388480), (5, 84310784), (8, 52694240), (10, 42155392), (16, 26347120), (20, 21077696), (32, 13173560), (40, 10538848), (61, 6910720), (64, 6586780), (80, 5269424), (122, 3455360), (128, 3293390), (160, 2634712), (244, 1727680), (256, 1646695), (305, 1382144), (320, 1317356), (488, 863840), (610, 691072), (640, 658678), (976, 431920), (1220, 345536), (1280, 329339), (1952, 215960), (2440, 172768), (3904, 107980), (4880, 86384), (5399, 78080), (7808, 53990), (9760, 43192), (10798, 39040), (15616, 26995), (19520, 21596)]