20702790

素因数分解:

$2^1\times 3^4\times 5^1\times {\mathrm{61}}^1\times {\mathrm{419}}^1$

素因数の和:499

約数の個数: 80

約数和(自身を含む): 56715120

約数和(自身を除く): 36012330

約数列:

[1, 2, 3, 5, 6, 9, 10, 15, 18, 27, 30, 45, 54, 61, 81, 90, 122, 135, 162, 183, 270, 305, 366, 405, 419, 549, 610, 810, 838, 915, 1098, 1257, 1647, 1830, 2095, 2514, 2745, 3294, 3771, 4190, 4941, 5490, 6285, 7542, 8235, 9882, 11313, 12570, 16470, 18855, 22626, 24705, 25559, 33939, 37710, 49410, 51118, 56565, 67878, 76677, 113130, 127795, 153354, 169695, 230031, 255590, 339390, 383385, 460062, 690093, 766770, 1150155, 1380186, 2070279, 2300310, 3450465, 4140558, 6900930, 10351395, 20702790]

約数ペア:

[(1, 20702790), (2, 10351395), (3, 6900930), (5, 4140558), (6, 3450465), (9, 2300310), (10, 2070279), (15, 1380186), (18, 1150155), (27, 766770), (30, 690093), (45, 460062), (54, 383385), (61, 339390), (81, 255590), (90, 230031), (122, 169695), (135, 153354), (162, 127795), (183, 113130), (270, 76677), (305, 67878), (366, 56565), (405, 51118), (419, 49410), (549, 37710), (610, 33939), (810, 25559), (838, 24705), (915, 22626), (1098, 18855), (1257, 16470), (1647, 12570), (1830, 11313), (2095, 9882), (2514, 8235), (2745, 7542), (3294, 6285), (3771, 5490), (4190, 4941)]