219921860

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{28123}}^1$

素因数の和:28172

約数の個数: 48

約数和(自身を含む): 510281856

約数和(自身を除く): 290359996

約数列:

[1, 2, 4, 5, 10, 17, 20, 23, 34, 46, 68, 85, 92, 115, 170, 230, 340, 391, 460, 782, 1564, 1955, 3910, 7820, 28123, 56246, 112492, 140615, 281230, 478091, 562460, 646829, 956182, 1293658, 1912364, 2390455, 2587316, 3234145, 4780910, 6468290, 9561820, 10996093, 12936580, 21992186, 43984372, 54980465, 109960930, 219921860]

約数ペア:

[(1, 219921860), (2, 109960930), (4, 54980465), (5, 43984372), (10, 21992186), (17, 12936580), (20, 10996093), (23, 9561820), (34, 6468290), (46, 4780910), (68, 3234145), (85, 2587316), (92, 2390455), (115, 1912364), (170, 1293658), (230, 956182), (340, 646829), (391, 562460), (460, 478091), (782, 281230), (1564, 140615), (1955, 112492), (3910, 56246), (7820, 28123)]