21149560

素因数分解:

$2^3\times 5^1\times {\mathrm{73}}^1\times {\mathrm{7243}}^1$

素因数の和:7327

約数の個数: 32

約数和(自身を含む): 48245040

約数和(自身を除く): 27095480

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 73, 146, 292, 365, 584, 730, 1460, 2920, 7243, 14486, 28972, 36215, 57944, 72430, 144860, 289720, 528739, 1057478, 2114956, 2643695, 4229912, 5287390, 10574780, 21149560]

約数ペア:

[(1, 21149560), (2, 10574780), (4, 5287390), (5, 4229912), (8, 2643695), (10, 2114956), (20, 1057478), (40, 528739), (73, 289720), (146, 144860), (292, 72430), (365, 57944), (584, 36215), (730, 28972), (1460, 14486), (2920, 7243)]