20812350

素因数分解:

$2^1\times 3^1\times 5^2\times {\mathrm{13}}^2\times {\mathrm{821}}^1$

素因数の和:862

約数の個数: 72

約数和(自身を含む): 55958472

約数和(自身を除く): 35146122

約数列:

[1, 2, 3, 5, 6, 10, 13, 15, 25, 26, 30, 39, 50, 65, 75, 78, 130, 150, 169, 195, 325, 338, 390, 507, 650, 821, 845, 975, 1014, 1642, 1690, 1950, 2463, 2535, 4105, 4225, 4926, 5070, 8210, 8450, 10673, 12315, 12675, 20525, 21346, 24630, 25350, 32019, 41050, 53365, 61575, 64038, 106730, 123150, 138749, 160095, 266825, 277498, 320190, 416247, 533650, 693745, 800475, 832494, 1387490, 1600950, 2081235, 3468725, 4162470, 6937450, 10406175, 20812350]

約数ペア:

[(1, 20812350), (2, 10406175), (3, 6937450), (5, 4162470), (6, 3468725), (10, 2081235), (13, 1600950), (15, 1387490), (25, 832494), (26, 800475), (30, 693745), (39, 533650), (50, 416247), (65, 320190), (75, 277498), (78, 266825), (130, 160095), (150, 138749), (169, 123150), (195, 106730), (325, 64038), (338, 61575), (390, 53365), (507, 41050), (650, 32019), (821, 25350), (845, 24630), (975, 21346), (1014, 20525), (1642, 12675), (1690, 12315), (1950, 10673), (2463, 8450), (2535, 8210), (4105, 5070), (4225, 4926)]