21487128

素因数分解:

$2^3\times 3^1\times {\mathrm{13}}^1\times {\mathrm{61}}^1\times {\mathrm{1129}}^1$

素因数の和:1212

約数の個数: 64

約数和(自身を含む): 58850400

約数和(自身を除く): 37363272

約数列:

[1, 2, 3, 4, 6, 8, 12, 13, 24, 26, 39, 52, 61, 78, 104, 122, 156, 183, 244, 312, 366, 488, 732, 793, 1129, 1464, 1586, 2258, 2379, 3172, 3387, 4516, 4758, 6344, 6774, 9032, 9516, 13548, 14677, 19032, 27096, 29354, 44031, 58708, 68869, 88062, 117416, 137738, 176124, 206607, 275476, 352248, 413214, 550952, 826428, 895297, 1652856, 1790594, 2685891, 3581188, 5371782, 7162376, 10743564, 21487128]

約数ペア:

[(1, 21487128), (2, 10743564), (3, 7162376), (4, 5371782), (6, 3581188), (8, 2685891), (12, 1790594), (13, 1652856), (24, 895297), (26, 826428), (39, 550952), (52, 413214), (61, 352248), (78, 275476), (104, 206607), (122, 176124), (156, 137738), (183, 117416), (244, 88062), (312, 68869), (366, 58708), (488, 44031), (732, 29354), (793, 27096), (1129, 19032), (1464, 14677), (1586, 13548), (2258, 9516), (2379, 9032), (3172, 6774), (3387, 6344), (4516, 4758)]