20281550

素因数分解:

$2^1\times 5^2\times {\mathrm{19}}^1\times {\mathrm{37}}^1\times {\mathrm{577}}^1$

素因数の和:645

約数の個数: 48

約数和(自身を含む): 40853040

約数和(自身を除く): 20571490

約数列:

[1, 2, 5, 10, 19, 25, 37, 38, 50, 74, 95, 185, 190, 370, 475, 577, 703, 925, 950, 1154, 1406, 1850, 2885, 3515, 5770, 7030, 10963, 14425, 17575, 21349, 21926, 28850, 35150, 42698, 54815, 106745, 109630, 213490, 274075, 405631, 533725, 548150, 811262, 1067450, 2028155, 4056310, 10140775, 20281550]

約数ペア:

[(1, 20281550), (2, 10140775), (5, 4056310), (10, 2028155), (19, 1067450), (25, 811262), (37, 548150), (38, 533725), (50, 405631), (74, 274075), (95, 213490), (185, 109630), (190, 106745), (370, 54815), (475, 42698), (577, 35150), (703, 28850), (925, 21926), (950, 21349), (1154, 17575), (1406, 14425), (1850, 10963), (2885, 7030), (3515, 5770)]