19451900

素因数分解:

$2^2\times 5^2\times {\mathrm{13}}^2\times {\mathrm{1151}}^1$

素因数の和:1191

約数の個数: 54

約数和(自身を含む): 45747072

約数和(自身を除く): 26295172

約数列:

[1, 2, 4, 5, 10, 13, 20, 25, 26, 50, 52, 65, 100, 130, 169, 260, 325, 338, 650, 676, 845, 1151, 1300, 1690, 2302, 3380, 4225, 4604, 5755, 8450, 11510, 14963, 16900, 23020, 28775, 29926, 57550, 59852, 74815, 115100, 149630, 194519, 299260, 374075, 389038, 748150, 778076, 972595, 1496300, 1945190, 3890380, 4862975, 9725950, 19451900]

約数ペア:

[(1, 19451900), (2, 9725950), (4, 4862975), (5, 3890380), (10, 1945190), (13, 1496300), (20, 972595), (25, 778076), (26, 748150), (50, 389038), (52, 374075), (65, 299260), (100, 194519), (130, 149630), (169, 115100), (260, 74815), (325, 59852), (338, 57550), (650, 29926), (676, 28775), (845, 23020), (1151, 16900), (1300, 14963), (1690, 11510), (2302, 8450), (3380, 5755), (4225, 4604)]