28667940

素因数分解:

$2^2\times 3^1\times 5^1\times 7^4\times {\mathrm{199}}^1$

素因数の和:239

約数の個数: 120

約数和(自身を含む): 94113600

約数和(自身を除く): 65445660

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 49, 60, 70, 84, 98, 105, 140, 147, 196, 199, 210, 245, 294, 343, 398, 420, 490, 588, 597, 686, 735, 796, 980, 995, 1029, 1194, 1372, 1393, 1470, 1715, 1990, 2058, 2388, 2401, 2786, 2940, 2985, 3430, 3980, 4116, 4179, 4802, 5145, 5572, 5970, 6860, 6965, 7203, 8358, 9604, 9751, 10290, 11940, 12005, 13930, 14406, 16716, 19502, 20580, 20895, 24010, 27860, 28812, 29253, 36015, 39004, 41790, 48020, 48755, 58506, 68257, 72030, 83580, 97510, 117012, 136514, 144060, 146265, 195020, 204771, 273028, 292530, 341285, 409542, 477799, 585060, 682570, 819084, 955598, 1023855, 1365140, 1433397, 1911196, 2047710, 2388995, 2866794, 4095420, 4777990, 5733588, 7166985, 9555980, 14333970, 28667940]

約数ペア:

[(1, 28667940), (2, 14333970), (3, 9555980), (4, 7166985), (5, 5733588), (6, 4777990), (7, 4095420), (10, 2866794), (12, 2388995), (14, 2047710), (15, 1911196), (20, 1433397), (21, 1365140), (28, 1023855), (30, 955598), (35, 819084), (42, 682570), (49, 585060), (60, 477799), (70, 409542), (84, 341285), (98, 292530), (105, 273028), (140, 204771), (147, 195020), (196, 146265), (199, 144060), (210, 136514), (245, 117012), (294, 97510), (343, 83580), (398, 72030), (420, 68257), (490, 58506), (588, 48755), (597, 48020), (686, 41790), (735, 39004), (796, 36015), (980, 29253), (995, 28812), (1029, 27860), (1194, 24010), (1372, 20895), (1393, 20580), (1470, 19502), (1715, 16716), (1990, 14406), (2058, 13930), (2388, 12005), (2401, 11940), (2786, 10290), (2940, 9751), (2985, 9604), (3430, 8358), (3980, 7203), (4116, 6965), (4179, 6860), (4802, 5970), (5145, 5572)]