21479728

素因数分解:

$2^4\times {\mathrm{19}}^1\times {\mathrm{70657}}^1$

素因数の和:70684

約数の個数: 20

約数和(自身を含む): 43807960

約数和(自身を除く): 22328232

約数列:

[1, 2, 4, 8, 16, 19, 38, 76, 152, 304, 70657, 141314, 282628, 565256, 1130512, 1342483, 2684966, 5369932, 10739864, 21479728]

約数ペア:

[(1, 21479728), (2, 10739864), (4, 5369932), (8, 2684966), (16, 1342483), (19, 1130512), (38, 565256), (76, 282628), (152, 141314), (304, 70657)]