19865580

素因数分解:

$2^2\times 3^1\times 5^1\times 7^2\times {\mathrm{29}}^1\times {\mathrm{233}}^1$

素因数の和:288

約数の個数: 144

約数和(自身を含む): 67223520

約数和(自身を除く): 47357940

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 29, 30, 35, 42, 49, 58, 60, 70, 84, 87, 98, 105, 116, 140, 145, 147, 174, 196, 203, 210, 233, 245, 290, 294, 348, 406, 420, 435, 466, 490, 580, 588, 609, 699, 735, 812, 870, 932, 980, 1015, 1165, 1218, 1398, 1421, 1470, 1631, 1740, 2030, 2330, 2436, 2796, 2842, 2940, 3045, 3262, 3495, 4060, 4263, 4660, 4893, 5684, 6090, 6524, 6757, 6990, 7105, 8155, 8526, 9786, 11417, 12180, 13514, 13980, 14210, 16310, 17052, 19572, 20271, 21315, 22834, 24465, 27028, 28420, 32620, 33785, 34251, 40542, 42630, 45668, 47299, 48930, 57085, 67570, 68502, 81084, 85260, 94598, 97860, 101355, 114170, 135140, 137004, 141897, 171255, 189196, 202710, 228340, 236495, 283794, 331093, 342510, 405420, 472990, 567588, 662186, 685020, 709485, 945980, 993279, 1324372, 1418970, 1655465, 1986558, 2837940, 3310930, 3973116, 4966395, 6621860, 9932790, 19865580]

約数ペア:

[(1, 19865580), (2, 9932790), (3, 6621860), (4, 4966395), (5, 3973116), (6, 3310930), (7, 2837940), (10, 1986558), (12, 1655465), (14, 1418970), (15, 1324372), (20, 993279), (21, 945980), (28, 709485), (29, 685020), (30, 662186), (35, 567588), (42, 472990), (49, 405420), (58, 342510), (60, 331093), (70, 283794), (84, 236495), (87, 228340), (98, 202710), (105, 189196), (116, 171255), (140, 141897), (145, 137004), (147, 135140), (174, 114170), (196, 101355), (203, 97860), (210, 94598), (233, 85260), (245, 81084), (290, 68502), (294, 67570), (348, 57085), (406, 48930), (420, 47299), (435, 45668), (466, 42630), (490, 40542), (580, 34251), (588, 33785), (609, 32620), (699, 28420), (735, 27028), (812, 24465), (870, 22834), (932, 21315), (980, 20271), (1015, 19572), (1165, 17052), (1218, 16310), (1398, 14210), (1421, 13980), (1470, 13514), (1631, 12180), (1740, 11417), (2030, 9786), (2330, 8526), (2436, 8155), (2796, 7105), (2842, 6990), (2940, 6757), (3045, 6524), (3262, 6090), (3495, 5684), (4060, 4893), (4263, 4660)]