19428256

素因数分解:

$2^5\times {\mathrm{37}}^1\times {\mathrm{61}}^1\times {\mathrm{269}}^1$

素因数の和:377

約数の個数: 48

約数和(自身を含む): 40075560

約数和(自身を除く): 20647304

約数列:

[1, 2, 4, 8, 16, 32, 37, 61, 74, 122, 148, 244, 269, 296, 488, 538, 592, 976, 1076, 1184, 1952, 2152, 2257, 4304, 4514, 8608, 9028, 9953, 16409, 18056, 19906, 32818, 36112, 39812, 65636, 72224, 79624, 131272, 159248, 262544, 318496, 525088, 607133, 1214266, 2428532, 4857064, 9714128, 19428256]

約数ペア:

[(1, 19428256), (2, 9714128), (4, 4857064), (8, 2428532), (16, 1214266), (32, 607133), (37, 525088), (61, 318496), (74, 262544), (122, 159248), (148, 131272), (244, 79624), (269, 72224), (296, 65636), (488, 39812), (538, 36112), (592, 32818), (976, 19906), (1076, 18056), (1184, 16409), (1952, 9953), (2152, 9028), (2257, 8608), (4304, 4514)]