80177720

素因数分解:

$2^3\times 5^1\times 7^2\times {\mathrm{19}}^1\times {\mathrm{2153}}^1$

素因数の和:2197

約数の個数: 96

約数和(自身を含む): 221000400

約数和(自身を除く): 140822680

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 19, 20, 28, 35, 38, 40, 49, 56, 70, 76, 95, 98, 133, 140, 152, 190, 196, 245, 266, 280, 380, 392, 490, 532, 665, 760, 931, 980, 1064, 1330, 1862, 1960, 2153, 2660, 3724, 4306, 4655, 5320, 7448, 8612, 9310, 10765, 15071, 17224, 18620, 21530, 30142, 37240, 40907, 43060, 60284, 75355, 81814, 86120, 105497, 120568, 150710, 163628, 204535, 210994, 286349, 301420, 327256, 409070, 421988, 527485, 572698, 602840, 818140, 843976, 1054970, 1145396, 1431745, 1636280, 2004443, 2109940, 2290792, 2863490, 4008886, 4219880, 5726980, 8017772, 10022215, 11453960, 16035544, 20044430, 40088860, 80177720]

約数ペア:

[(1, 80177720), (2, 40088860), (4, 20044430), (5, 16035544), (7, 11453960), (8, 10022215), (10, 8017772), (14, 5726980), (19, 4219880), (20, 4008886), (28, 2863490), (35, 2290792), (38, 2109940), (40, 2004443), (49, 1636280), (56, 1431745), (70, 1145396), (76, 1054970), (95, 843976), (98, 818140), (133, 602840), (140, 572698), (152, 527485), (190, 421988), (196, 409070), (245, 327256), (266, 301420), (280, 286349), (380, 210994), (392, 204535), (490, 163628), (532, 150710), (665, 120568), (760, 105497), (931, 86120), (980, 81814), (1064, 75355), (1330, 60284), (1862, 43060), (1960, 40907), (2153, 37240), (2660, 30142), (3724, 21530), (4306, 18620), (4655, 17224), (5320, 15071), (7448, 10765), (8612, 9310)]