19968810

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{53}}^1\times {\mathrm{661}}^1$

素因数の和:743

約数の個数: 64

約数和(自身を含む): 51477120

約数和(自身を除く): 31508310

約数列:

[1, 2, 3, 5, 6, 10, 15, 19, 30, 38, 53, 57, 95, 106, 114, 159, 190, 265, 285, 318, 530, 570, 661, 795, 1007, 1322, 1590, 1983, 2014, 3021, 3305, 3966, 5035, 6042, 6610, 9915, 10070, 12559, 15105, 19830, 25118, 30210, 35033, 37677, 62795, 70066, 75354, 105099, 125590, 175165, 188385, 210198, 350330, 376770, 525495, 665627, 1050990, 1331254, 1996881, 3328135, 3993762, 6656270, 9984405, 19968810]

約数ペア:

[(1, 19968810), (2, 9984405), (3, 6656270), (5, 3993762), (6, 3328135), (10, 1996881), (15, 1331254), (19, 1050990), (30, 665627), (38, 525495), (53, 376770), (57, 350330), (95, 210198), (106, 188385), (114, 175165), (159, 125590), (190, 105099), (265, 75354), (285, 70066), (318, 62795), (530, 37677), (570, 35033), (661, 30210), (795, 25118), (1007, 19830), (1322, 15105), (1590, 12559), (1983, 10070), (2014, 9915), (3021, 6610), (3305, 6042), (3966, 5035)]