20383580

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{79}}^1\times {\mathrm{97}}^1$

素因数の和:211

約数の個数: 96

約数和(自身を含む): 52684800

約数和(自身を除く): 32301220

約数列:

[1, 2, 4, 5, 7, 10, 14, 19, 20, 28, 35, 38, 70, 76, 79, 95, 97, 133, 140, 158, 190, 194, 266, 316, 380, 388, 395, 485, 532, 553, 665, 679, 790, 970, 1106, 1330, 1358, 1501, 1580, 1843, 1940, 2212, 2660, 2716, 2765, 3002, 3395, 3686, 5530, 6004, 6790, 7372, 7505, 7663, 9215, 10507, 11060, 12901, 13580, 15010, 15326, 18430, 21014, 25802, 30020, 30652, 36860, 38315, 42028, 51604, 52535, 53641, 64505, 76630, 105070, 107282, 129010, 145597, 153260, 210140, 214564, 258020, 268205, 291194, 536410, 582388, 727985, 1019179, 1072820, 1455970, 2038358, 2911940, 4076716, 5095895, 10191790, 20383580]

約数ペア:

[(1, 20383580), (2, 10191790), (4, 5095895), (5, 4076716), (7, 2911940), (10, 2038358), (14, 1455970), (19, 1072820), (20, 1019179), (28, 727985), (35, 582388), (38, 536410), (70, 291194), (76, 268205), (79, 258020), (95, 214564), (97, 210140), (133, 153260), (140, 145597), (158, 129010), (190, 107282), (194, 105070), (266, 76630), (316, 64505), (380, 53641), (388, 52535), (395, 51604), (485, 42028), (532, 38315), (553, 36860), (665, 30652), (679, 30020), (790, 25802), (970, 21014), (1106, 18430), (1330, 15326), (1358, 15010), (1501, 13580), (1580, 12901), (1843, 11060), (1940, 10507), (2212, 9215), (2660, 7663), (2716, 7505), (2765, 7372), (3002, 6790), (3395, 6004), (3686, 5530)]