19675520

素因数分解:

$2^7\times 5^1\times {\mathrm{71}}^1\times {\mathrm{433}}^1$

素因数の和:523

約数の個数: 64

約数和(自身を含む): 47809440

約数和(自身を除く): 28133920

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 71, 80, 128, 142, 160, 284, 320, 355, 433, 568, 640, 710, 866, 1136, 1420, 1732, 2165, 2272, 2840, 3464, 4330, 4544, 5680, 6928, 8660, 9088, 11360, 13856, 17320, 22720, 27712, 30743, 34640, 45440, 55424, 61486, 69280, 122972, 138560, 153715, 245944, 277120, 307430, 491888, 614860, 983776, 1229720, 1967552, 2459440, 3935104, 4918880, 9837760, 19675520]

約数ペア:

[(1, 19675520), (2, 9837760), (4, 4918880), (5, 3935104), (8, 2459440), (10, 1967552), (16, 1229720), (20, 983776), (32, 614860), (40, 491888), (64, 307430), (71, 277120), (80, 245944), (128, 153715), (142, 138560), (160, 122972), (284, 69280), (320, 61486), (355, 55424), (433, 45440), (568, 34640), (640, 30743), (710, 27712), (866, 22720), (1136, 17320), (1420, 13856), (1732, 11360), (2165, 9088), (2272, 8660), (2840, 6928), (3464, 5680), (4330, 4544)]