7780900

素因数分解:

$2^2\times 5^2\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{199}}^1$

素因数の和:253

約数の個数: 72

約数和(自身を含む): 18748800

約数和(自身を除く): 10967900

約数列:

[1, 2, 4, 5, 10, 17, 20, 23, 25, 34, 46, 50, 68, 85, 92, 100, 115, 170, 199, 230, 340, 391, 398, 425, 460, 575, 782, 796, 850, 995, 1150, 1564, 1700, 1955, 1990, 2300, 3383, 3910, 3980, 4577, 4975, 6766, 7820, 9154, 9775, 9950, 13532, 16915, 18308, 19550, 19900, 22885, 33830, 39100, 45770, 67660, 77809, 84575, 91540, 114425, 155618, 169150, 228850, 311236, 338300, 389045, 457700, 778090, 1556180, 1945225, 3890450, 7780900]

約数ペア:

[(1, 7780900), (2, 3890450), (4, 1945225), (5, 1556180), (10, 778090), (17, 457700), (20, 389045), (23, 338300), (25, 311236), (34, 228850), (46, 169150), (50, 155618), (68, 114425), (85, 91540), (92, 84575), (100, 77809), (115, 67660), (170, 45770), (199, 39100), (230, 33830), (340, 22885), (391, 19900), (398, 19550), (425, 18308), (460, 16915), (575, 13532), (782, 9950), (796, 9775), (850, 9154), (995, 7820), (1150, 6766), (1564, 4975), (1700, 4577), (1955, 3980), (1990, 3910), (2300, 3383)]