21427744

素因数分解:

$2^5\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{2711}}^1$

素因数の和:2753

約数の個数: 48

約数和(自身を含む): 47839680

約数和(自身を除く): 26411936

約数列:

[1, 2, 4, 8, 13, 16, 19, 26, 32, 38, 52, 76, 104, 152, 208, 247, 304, 416, 494, 608, 988, 1976, 2711, 3952, 5422, 7904, 10844, 21688, 35243, 43376, 51509, 70486, 86752, 103018, 140972, 206036, 281944, 412072, 563888, 669617, 824144, 1127776, 1339234, 1648288, 2678468, 5356936, 10713872, 21427744]

約数ペア:

[(1, 21427744), (2, 10713872), (4, 5356936), (8, 2678468), (13, 1648288), (16, 1339234), (19, 1127776), (26, 824144), (32, 669617), (38, 563888), (52, 412072), (76, 281944), (104, 206036), (152, 140972), (208, 103018), (247, 86752), (304, 70486), (416, 51509), (494, 43376), (608, 35243), (988, 21688), (1976, 10844), (2711, 7904), (3952, 5422)]