400753880

素因数分解:

$2^3\times 5^1\times {\mathrm{83}}^1\times {\mathrm{120709}}^1$

素因数の和:120803

約数の個数: 32

約数和(自身を含む): 912567600

約数和(自身を除く): 511813720

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 83, 166, 332, 415, 664, 830, 1660, 3320, 120709, 241418, 482836, 603545, 965672, 1207090, 2414180, 4828360, 10018847, 20037694, 40075388, 50094235, 80150776, 100188470, 200376940, 400753880]

約数ペア:

[(1, 400753880), (2, 200376940), (4, 100188470), (5, 80150776), (8, 50094235), (10, 40075388), (20, 20037694), (40, 10018847), (83, 4828360), (166, 2414180), (332, 1207090), (415, 965672), (664, 603545), (830, 482836), (1660, 241418), (3320, 120709)]