21856788

素因数分解:

$2^2\times 3^2\times {\mathrm{37}}^1\times {\mathrm{61}}^1\times {\mathrm{269}}^1$

素因数の和:377

約数の個数: 72

約数和(自身を含む): 57886920

約数和(自身を除く): 36030132

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 36, 37, 61, 74, 111, 122, 148, 183, 222, 244, 269, 333, 366, 444, 538, 549, 666, 732, 807, 1076, 1098, 1332, 1614, 2196, 2257, 2421, 3228, 4514, 4842, 6771, 9028, 9684, 9953, 13542, 16409, 19906, 20313, 27084, 29859, 32818, 39812, 40626, 49227, 59718, 65636, 81252, 89577, 98454, 119436, 147681, 179154, 196908, 295362, 358308, 590724, 607133, 1214266, 1821399, 2428532, 3642798, 5464197, 7285596, 10928394, 21856788]

約数ペア:

[(1, 21856788), (2, 10928394), (3, 7285596), (4, 5464197), (6, 3642798), (9, 2428532), (12, 1821399), (18, 1214266), (36, 607133), (37, 590724), (61, 358308), (74, 295362), (111, 196908), (122, 179154), (148, 147681), (183, 119436), (222, 98454), (244, 89577), (269, 81252), (333, 65636), (366, 59718), (444, 49227), (538, 40626), (549, 39812), (666, 32818), (732, 29859), (807, 27084), (1076, 20313), (1098, 19906), (1332, 16409), (1614, 13542), (2196, 9953), (2257, 9684), (2421, 9028), (3228, 6771), (4514, 4842)]