2018819720

素因数分解:

$2^3\times 5^1\times {\mathrm{79}}^1\times {\mathrm{307}}^1\times {\mathrm{2081}}^1$

素因数の和:2478

約数の個数: 64

約数和(自身を含む): 4617043200

約数和(自身を除く): 2598223480

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 79, 158, 307, 316, 395, 614, 632, 790, 1228, 1535, 1580, 2081, 2456, 3070, 3160, 4162, 6140, 8324, 10405, 12280, 16648, 20810, 24253, 41620, 48506, 83240, 97012, 121265, 164399, 194024, 242530, 328798, 485060, 638867, 657596, 821995, 970120, 1277734, 1315192, 1643990, 2555468, 3194335, 3287980, 5110936, 6388670, 6575960, 12777340, 25554680, 50470493, 100940986, 201881972, 252352465, 403763944, 504704930, 1009409860, 2018819720]

約数ペア:

[(1, 2018819720), (2, 1009409860), (4, 504704930), (5, 403763944), (8, 252352465), (10, 201881972), (20, 100940986), (40, 50470493), (79, 25554680), (158, 12777340), (307, 6575960), (316, 6388670), (395, 5110936), (614, 3287980), (632, 3194335), (790, 2555468), (1228, 1643990), (1535, 1315192), (1580, 1277734), (2081, 970120), (2456, 821995), (3070, 657596), (3160, 638867), (4162, 485060), (6140, 328798), (8324, 242530), (10405, 194024), (12280, 164399), (16648, 121265), (20810, 97012), (24253, 83240), (41620, 48506)]