20553900

素因数分解:

$2^2\times 3^1\times 5^2\times {\mathrm{131}}^1\times {\mathrm{523}}^1$

素因数の和:671

約数の個数: 72

約数和(自身を含む): 60037824

約数和(自身を除く): 39483924

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 25, 30, 50, 60, 75, 100, 131, 150, 262, 300, 393, 523, 524, 655, 786, 1046, 1310, 1569, 1572, 1965, 2092, 2615, 2620, 3138, 3275, 3930, 5230, 6276, 6550, 7845, 7860, 9825, 10460, 13075, 13100, 15690, 19650, 26150, 31380, 39225, 39300, 52300, 68513, 78450, 137026, 156900, 205539, 274052, 342565, 411078, 685130, 822156, 1027695, 1370260, 1712825, 2055390, 3425650, 4110780, 5138475, 6851300, 10276950, 20553900]

約数ペア:

[(1, 20553900), (2, 10276950), (3, 6851300), (4, 5138475), (5, 4110780), (6, 3425650), (10, 2055390), (12, 1712825), (15, 1370260), (20, 1027695), (25, 822156), (30, 685130), (50, 411078), (60, 342565), (75, 274052), (100, 205539), (131, 156900), (150, 137026), (262, 78450), (300, 68513), (393, 52300), (523, 39300), (524, 39225), (655, 31380), (786, 26150), (1046, 19650), (1310, 15690), (1569, 13100), (1572, 13075), (1965, 10460), (2092, 9825), (2615, 7860), (2620, 7845), (3138, 6550), (3275, 6276), (3930, 5230)]