21535578

素因数分解:

$2^1\times 3^3\times {\mathrm{41}}^1\times {\mathrm{71}}^1\times {\mathrm{137}}^1$

素因数の和:260

約数の個数: 64

約数和(自身を含む): 50077440

約数和(自身を除く): 28541862

約数列:

[1, 2, 3, 6, 9, 18, 27, 41, 54, 71, 82, 123, 137, 142, 213, 246, 274, 369, 411, 426, 639, 738, 822, 1107, 1233, 1278, 1917, 2214, 2466, 2911, 3699, 3834, 5617, 5822, 7398, 8733, 9727, 11234, 16851, 17466, 19454, 26199, 29181, 33702, 50553, 52398, 58362, 78597, 87543, 101106, 151659, 157194, 175086, 262629, 303318, 398807, 525258, 797614, 1196421, 2392842, 3589263, 7178526, 10767789, 21535578]

約数ペア:

[(1, 21535578), (2, 10767789), (3, 7178526), (6, 3589263), (9, 2392842), (18, 1196421), (27, 797614), (41, 525258), (54, 398807), (71, 303318), (82, 262629), (123, 175086), (137, 157194), (142, 151659), (213, 101106), (246, 87543), (274, 78597), (369, 58362), (411, 52398), (426, 50553), (639, 33702), (738, 29181), (822, 26199), (1107, 19454), (1233, 17466), (1278, 16851), (1917, 11234), (2214, 9727), (2466, 8733), (2911, 7398), (3699, 5822), (3834, 5617)]