38961920

素因数分解:

$2^8\times 5^1\times {\mathrm{61}}^1\times {\mathrm{499}}^1$

素因数の和:581

約数の個数: 72

約数和(自身を含む): 95046000

約数和(自身を除く): 56084080

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 61, 64, 80, 122, 128, 160, 244, 256, 305, 320, 488, 499, 610, 640, 976, 998, 1220, 1280, 1952, 1996, 2440, 2495, 3904, 3992, 4880, 4990, 7808, 7984, 9760, 9980, 15616, 15968, 19520, 19960, 30439, 31936, 39040, 39920, 60878, 63872, 78080, 79840, 121756, 127744, 152195, 159680, 243512, 304390, 319360, 487024, 608780, 638720, 974048, 1217560, 1948096, 2435120, 3896192, 4870240, 7792384, 9740480, 19480960, 38961920]

約数ペア:

[(1, 38961920), (2, 19480960), (4, 9740480), (5, 7792384), (8, 4870240), (10, 3896192), (16, 2435120), (20, 1948096), (32, 1217560), (40, 974048), (61, 638720), (64, 608780), (80, 487024), (122, 319360), (128, 304390), (160, 243512), (244, 159680), (256, 152195), (305, 127744), (320, 121756), (488, 79840), (499, 78080), (610, 63872), (640, 60878), (976, 39920), (998, 39040), (1220, 31936), (1280, 30439), (1952, 19960), (1996, 19520), (2440, 15968), (2495, 15616), (3904, 9980), (3992, 9760), (4880, 7984), (4990, 7808)]