400700240

素因数分解:

$2^4\times 5^1\times {\mathrm{127}}^1\times {\mathrm{39439}}^1$

素因数の和:39579

約数の個数: 40

約数和(自身を含む): 938987520

約数和(自身を除く): 538287280

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 127, 254, 508, 635, 1016, 1270, 2032, 2540, 5080, 10160, 39439, 78878, 157756, 197195, 315512, 394390, 631024, 788780, 1577560, 3155120, 5008753, 10017506, 20035012, 25043765, 40070024, 50087530, 80140048, 100175060, 200350120, 400700240]

約数ペア:

[(1, 400700240), (2, 200350120), (4, 100175060), (5, 80140048), (8, 50087530), (10, 40070024), (16, 25043765), (20, 20035012), (40, 10017506), (80, 5008753), (127, 3155120), (254, 1577560), (508, 788780), (635, 631024), (1016, 394390), (1270, 315512), (2032, 197195), (2540, 157756), (5080, 78878), (10160, 39439)]