20804536520

素因数分解:

$2^3\times 5^1\times {\mathrm{41}}^1\times {\mathrm{607}}^1\times {\mathrm{20899}}^1$

素因数の和:21558

約数の個数: 64

約数和(自身を含む): 48033216000

約数和(自身を除く): 27228679480

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 41, 82, 164, 205, 328, 410, 607, 820, 1214, 1640, 2428, 3035, 4856, 6070, 12140, 20899, 24280, 24887, 41798, 49774, 83596, 99548, 104495, 124435, 167192, 199096, 208990, 248870, 417980, 497740, 835960, 856859, 995480, 1713718, 3427436, 4284295, 6854872, 8568590, 12685693, 17137180, 25371386, 34274360, 50742772, 63428465, 101485544, 126856930, 253713860, 507427720, 520113413, 1040226826, 2080453652, 2600567065, 4160907304, 5201134130, 10402268260, 20804536520]

約数ペア:

[(1, 20804536520), (2, 10402268260), (4, 5201134130), (5, 4160907304), (8, 2600567065), (10, 2080453652), (20, 1040226826), (40, 520113413), (41, 507427720), (82, 253713860), (164, 126856930), (205, 101485544), (328, 63428465), (410, 50742772), (607, 34274360), (820, 25371386), (1214, 17137180), (1640, 12685693), (2428, 8568590), (3035, 6854872), (4856, 4284295), (6070, 3427436), (12140, 1713718), (20899, 995480), (24280, 856859), (24887, 835960), (41798, 497740), (49774, 417980), (83596, 248870), (99548, 208990), (104495, 199096), (124435, 167192)]