1998590980

素因数分解:

$2^2\times 5^1\times {\mathrm{23}}^1\times {\mathrm{43}}^1\times {\mathrm{79}}^1\times {\mathrm{1279}}^1$

素因数の和:1433

約数の個数: 96

約数和(自身を含む): 4541644800

約数和(自身を除く): 2543053820

約数列:

[1, 2, 4, 5, 10, 20, 23, 43, 46, 79, 86, 92, 115, 158, 172, 215, 230, 316, 395, 430, 460, 790, 860, 989, 1279, 1580, 1817, 1978, 2558, 3397, 3634, 3956, 4945, 5116, 6395, 6794, 7268, 9085, 9890, 12790, 13588, 16985, 18170, 19780, 25580, 29417, 33970, 36340, 54997, 58834, 67940, 78131, 101041, 109994, 117668, 147085, 156262, 202082, 219988, 274985, 294170, 312524, 390655, 404164, 505205, 549970, 588340, 781310, 1010410, 1099940, 1264931, 1562620, 2020820, 2323943, 2529862, 4344763, 4647886, 5059724, 6324655, 8689526, 9295772, 11619715, 12649310, 17379052, 21723815, 23239430, 25298620, 43447630, 46478860, 86895260, 99929549, 199859098, 399718196, 499647745, 999295490, 1998590980]

約数ペア:

[(1, 1998590980), (2, 999295490), (4, 499647745), (5, 399718196), (10, 199859098), (20, 99929549), (23, 86895260), (43, 46478860), (46, 43447630), (79, 25298620), (86, 23239430), (92, 21723815), (115, 17379052), (158, 12649310), (172, 11619715), (215, 9295772), (230, 8689526), (316, 6324655), (395, 5059724), (430, 4647886), (460, 4344763), (790, 2529862), (860, 2323943), (989, 2020820), (1279, 1562620), (1580, 1264931), (1817, 1099940), (1978, 1010410), (2558, 781310), (3397, 588340), (3634, 549970), (3956, 505205), (4945, 404164), (5116, 390655), (6395, 312524), (6794, 294170), (7268, 274985), (9085, 219988), (9890, 202082), (12790, 156262), (13588, 147085), (16985, 117668), (18170, 109994), (19780, 101041), (25580, 78131), (29417, 67940), (33970, 58834), (36340, 54997)]