20555760

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{41}}^1\times {\mathrm{2089}}^1$

素因数の和:2146

約数の個数: 80

約数和(自身を含む): 65308320

約数和(自身を除く): 44752560

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 40, 41, 48, 60, 80, 82, 120, 123, 164, 205, 240, 246, 328, 410, 492, 615, 656, 820, 984, 1230, 1640, 1968, 2089, 2460, 3280, 4178, 4920, 6267, 8356, 9840, 10445, 12534, 16712, 20890, 25068, 31335, 33424, 41780, 50136, 62670, 83560, 85649, 100272, 125340, 167120, 171298, 250680, 256947, 342596, 428245, 501360, 513894, 685192, 856490, 1027788, 1284735, 1370384, 1712980, 2055576, 2569470, 3425960, 4111152, 5138940, 6851920, 10277880, 20555760]

約数ペア:

[(1, 20555760), (2, 10277880), (3, 6851920), (4, 5138940), (5, 4111152), (6, 3425960), (8, 2569470), (10, 2055576), (12, 1712980), (15, 1370384), (16, 1284735), (20, 1027788), (24, 856490), (30, 685192), (40, 513894), (41, 501360), (48, 428245), (60, 342596), (80, 256947), (82, 250680), (120, 171298), (123, 167120), (164, 125340), (205, 100272), (240, 85649), (246, 83560), (328, 62670), (410, 50136), (492, 41780), (615, 33424), (656, 31335), (820, 25068), (984, 20890), (1230, 16712), (1640, 12534), (1968, 10445), (2089, 9840), (2460, 8356), (3280, 6267), (4178, 4920)]