21811216

素因数分解:

$2^4\times 7^1\times {\mathrm{149}}^1\times {\mathrm{1307}}^1$

素因数の和:1471

約数の個数: 40

約数和(自身を含む): 48657600

約数和(自身を除く): 26846384

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 56, 112, 149, 298, 596, 1043, 1192, 1307, 2086, 2384, 2614, 4172, 5228, 8344, 9149, 10456, 16688, 18298, 20912, 36596, 73192, 146384, 194743, 389486, 778972, 1363201, 1557944, 2726402, 3115888, 5452804, 10905608, 21811216]

約数ペア:

[(1, 21811216), (2, 10905608), (4, 5452804), (7, 3115888), (8, 2726402), (14, 1557944), (16, 1363201), (28, 778972), (56, 389486), (112, 194743), (149, 146384), (298, 73192), (596, 36596), (1043, 20912), (1192, 18298), (1307, 16688), (2086, 10456), (2384, 9149), (2614, 8344), (4172, 5228)]