18391000

素因数分解:

$2^3\times 5^3\times {\mathrm{53}}^1\times {\mathrm{347}}^1$

素因数の和:421

約数の個数: 64

約数和(自身を含む): 43973280

約数和(自身を除く): 25582280

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 50, 53, 100, 106, 125, 200, 212, 250, 265, 347, 424, 500, 530, 694, 1000, 1060, 1325, 1388, 1735, 2120, 2650, 2776, 3470, 5300, 6625, 6940, 8675, 10600, 13250, 13880, 17350, 18391, 26500, 34700, 36782, 43375, 53000, 69400, 73564, 86750, 91955, 147128, 173500, 183910, 347000, 367820, 459775, 735640, 919550, 1839100, 2298875, 3678200, 4597750, 9195500, 18391000]

約数ペア:

[(1, 18391000), (2, 9195500), (4, 4597750), (5, 3678200), (8, 2298875), (10, 1839100), (20, 919550), (25, 735640), (40, 459775), (50, 367820), (53, 347000), (100, 183910), (106, 173500), (125, 147128), (200, 91955), (212, 86750), (250, 73564), (265, 69400), (347, 53000), (424, 43375), (500, 36782), (530, 34700), (694, 26500), (1000, 18391), (1060, 17350), (1325, 13880), (1388, 13250), (1735, 10600), (2120, 8675), (2650, 6940), (2776, 6625), (3470, 5300)]