20153560

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{167}}^1\times {\mathrm{431}}^1$

素因数の和:616

約数の個数: 64

約数和(自身を含む): 52254720

約数和(自身を除く): 32101160

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 167, 280, 334, 431, 668, 835, 862, 1169, 1336, 1670, 1724, 2155, 2338, 3017, 3340, 3448, 4310, 4676, 5845, 6034, 6680, 8620, 9352, 11690, 12068, 15085, 17240, 23380, 24136, 30170, 46760, 60340, 71977, 120680, 143954, 287908, 359885, 503839, 575816, 719770, 1007678, 1439540, 2015356, 2519195, 2879080, 4030712, 5038390, 10076780, 20153560]

約数ペア:

[(1, 20153560), (2, 10076780), (4, 5038390), (5, 4030712), (7, 2879080), (8, 2519195), (10, 2015356), (14, 1439540), (20, 1007678), (28, 719770), (35, 575816), (40, 503839), (56, 359885), (70, 287908), (140, 143954), (167, 120680), (280, 71977), (334, 60340), (431, 46760), (668, 30170), (835, 24136), (862, 23380), (1169, 17240), (1336, 15085), (1670, 12068), (1724, 11690), (2155, 9352), (2338, 8620), (3017, 6680), (3340, 6034), (3448, 5845), (4310, 4676)]