78647920

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{47}}^1\times {\mathrm{1609}}^1$

素因数の和:1682

約数の個数: 80

約数和(自身を含む): 201237120

約数和(自身を除く): 122589200

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 40, 47, 52, 65, 80, 94, 104, 130, 188, 208, 235, 260, 376, 470, 520, 611, 752, 940, 1040, 1222, 1609, 1880, 2444, 3055, 3218, 3760, 4888, 6110, 6436, 8045, 9776, 12220, 12872, 16090, 20917, 24440, 25744, 32180, 41834, 48880, 64360, 75623, 83668, 104585, 128720, 151246, 167336, 209170, 302492, 334672, 378115, 418340, 604984, 756230, 836680, 983099, 1209968, 1512460, 1673360, 1966198, 3024920, 3932396, 4915495, 6049840, 7864792, 9830990, 15729584, 19661980, 39323960, 78647920]

約数ペア:

[(1, 78647920), (2, 39323960), (4, 19661980), (5, 15729584), (8, 9830990), (10, 7864792), (13, 6049840), (16, 4915495), (20, 3932396), (26, 3024920), (40, 1966198), (47, 1673360), (52, 1512460), (65, 1209968), (80, 983099), (94, 836680), (104, 756230), (130, 604984), (188, 418340), (208, 378115), (235, 334672), (260, 302492), (376, 209170), (470, 167336), (520, 151246), (611, 128720), (752, 104585), (940, 83668), (1040, 75623), (1222, 64360), (1609, 48880), (1880, 41834), (2444, 32180), (3055, 25744), (3218, 24440), (3760, 20917), (4888, 16090), (6110, 12872), (6436, 12220), (8045, 9776)]