28785640

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{197}}^1\times {\mathrm{281}}^1$

素因数の和:502

約数の個数: 64

約数和(自身を含む): 70353360

約数和(自身を除く): 41567720

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 197, 260, 281, 394, 520, 562, 788, 985, 1124, 1405, 1576, 1970, 2248, 2561, 2810, 3653, 3940, 5122, 5620, 7306, 7880, 10244, 11240, 12805, 14612, 18265, 20488, 25610, 29224, 36530, 51220, 55357, 73060, 102440, 110714, 146120, 221428, 276785, 442856, 553570, 719641, 1107140, 1439282, 2214280, 2878564, 3598205, 5757128, 7196410, 14392820, 28785640]

約数ペア:

[(1, 28785640), (2, 14392820), (4, 7196410), (5, 5757128), (8, 3598205), (10, 2878564), (13, 2214280), (20, 1439282), (26, 1107140), (40, 719641), (52, 553570), (65, 442856), (104, 276785), (130, 221428), (197, 146120), (260, 110714), (281, 102440), (394, 73060), (520, 55357), (562, 51220), (788, 36530), (985, 29224), (1124, 25610), (1405, 20488), (1576, 18265), (1970, 14612), (2248, 12805), (2561, 11240), (2810, 10244), (3653, 7880), (3940, 7306), (5122, 5620)]