81778620

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{571}}^1$

素因数の和:632

約数の個数: 192

約数和(自身を含む): 295206912

約数和(自身を除く): 213428292

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 11, 12, 14, 15, 20, 21, 22, 28, 30, 31, 33, 35, 42, 44, 55, 60, 62, 66, 70, 77, 84, 93, 105, 110, 124, 132, 140, 154, 155, 165, 186, 210, 217, 220, 231, 308, 310, 330, 341, 372, 385, 420, 434, 462, 465, 571, 620, 651, 660, 682, 770, 868, 924, 930, 1023, 1085, 1142, 1155, 1302, 1364, 1540, 1705, 1713, 1860, 2046, 2170, 2284, 2310, 2387, 2604, 2855, 3255, 3410, 3426, 3997, 4092, 4340, 4620, 4774, 5115, 5710, 6281, 6510, 6820, 6852, 7161, 7994, 8565, 9548, 10230, 11420, 11935, 11991, 12562, 13020, 14322, 15988, 17130, 17701, 18843, 19985, 20460, 23870, 23982, 25124, 28644, 31405, 34260, 35402, 35805, 37686, 39970, 43967, 47740, 47964, 53103, 59955, 62810, 70804, 71610, 75372, 79940, 87934, 88505, 94215, 106206, 119910, 123907, 125620, 131901, 143220, 175868, 177010, 188430, 194711, 212412, 219835, 239820, 247814, 263802, 265515, 354020, 371721, 376860, 389422, 439670, 495628, 527604, 531030, 584133, 619535, 659505, 743442, 778844, 879340, 973555, 1062060, 1168266, 1239070, 1319010, 1362977, 1486884, 1858605, 1947110, 2336532, 2478140, 2638020, 2725954, 2920665, 3717210, 3894220, 4088931, 5451908, 5841330, 6814885, 7434420, 8177862, 11682660, 13629770, 16355724, 20444655, 27259540, 40889310, 81778620]

約数ペア:

[(1, 81778620), (2, 40889310), (3, 27259540), (4, 20444655), (5, 16355724), (6, 13629770), (7, 11682660), (10, 8177862), (11, 7434420), (12, 6814885), (14, 5841330), (15, 5451908), (20, 4088931), (21, 3894220), (22, 3717210), (28, 2920665), (30, 2725954), (31, 2638020), (33, 2478140), (35, 2336532), (42, 1947110), (44, 1858605), (55, 1486884), (60, 1362977), (62, 1319010), (66, 1239070), (70, 1168266), (77, 1062060), (84, 973555), (93, 879340), (105, 778844), (110, 743442), (124, 659505), (132, 619535), (140, 584133), (154, 531030), (155, 527604), (165, 495628), (186, 439670), (210, 389422), (217, 376860), (220, 371721), (231, 354020), (308, 265515), (310, 263802), (330, 247814), (341, 239820), (372, 219835), (385, 212412), (420, 194711), (434, 188430), (462, 177010), (465, 175868), (571, 143220), (620, 131901), (651, 125620), (660, 123907), (682, 119910), (770, 106206), (868, 94215), (924, 88505), (930, 87934), (1023, 79940), (1085, 75372), (1142, 71610), (1155, 70804), (1302, 62810), (1364, 59955), (1540, 53103), (1705, 47964), (1713, 47740), (1860, 43967), (2046, 39970), (2170, 37686), (2284, 35805), (2310, 35402), (2387, 34260), (2604, 31405), (2855, 28644), (3255, 25124), (3410, 23982), (3426, 23870), (3997, 20460), (4092, 19985), (4340, 18843), (4620, 17701), (4774, 17130), (5115, 15988), (5710, 14322), (6281, 13020), (6510, 12562), (6820, 11991), (6852, 11935), (7161, 11420), (7994, 10230), (8565, 9548)]