19406480

素因数分解:

$2^4\times 5^1\times {\mathrm{23}}^1\times {\mathrm{53}}^1\times {\mathrm{199}}^1$

素因数の和:288

約数の個数: 80

約数和(自身を含む): 48211200

約数和(自身を除く): 28804720

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 23, 40, 46, 53, 80, 92, 106, 115, 184, 199, 212, 230, 265, 368, 398, 424, 460, 530, 796, 848, 920, 995, 1060, 1219, 1592, 1840, 1990, 2120, 2438, 3184, 3980, 4240, 4577, 4876, 6095, 7960, 9154, 9752, 10547, 12190, 15920, 18308, 19504, 21094, 22885, 24380, 36616, 42188, 45770, 48760, 52735, 73232, 84376, 91540, 97520, 105470, 168752, 183080, 210940, 242581, 366160, 421880, 485162, 843760, 970324, 1212905, 1940648, 2425810, 3881296, 4851620, 9703240, 19406480]

約数ペア:

[(1, 19406480), (2, 9703240), (4, 4851620), (5, 3881296), (8, 2425810), (10, 1940648), (16, 1212905), (20, 970324), (23, 843760), (40, 485162), (46, 421880), (53, 366160), (80, 242581), (92, 210940), (106, 183080), (115, 168752), (184, 105470), (199, 97520), (212, 91540), (230, 84376), (265, 73232), (368, 52735), (398, 48760), (424, 45770), (460, 42188), (530, 36616), (796, 24380), (848, 22885), (920, 21094), (995, 19504), (1060, 18308), (1219, 15920), (1592, 12190), (1840, 10547), (1990, 9752), (2120, 9154), (2438, 7960), (3184, 6095), (3980, 4876), (4240, 4577)]