20464920

素因数分解:

$2^3\times 3^3\times 5^1\times 7^1\times {\mathrm{2707}}^1$

素因数の和:2734

約数の個数: 128

約数和(自身を含む): 77990400

約数和(自身を除く): 57525480

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 14, 15, 18, 20, 21, 24, 27, 28, 30, 35, 36, 40, 42, 45, 54, 56, 60, 63, 70, 72, 84, 90, 105, 108, 120, 126, 135, 140, 168, 180, 189, 210, 216, 252, 270, 280, 315, 360, 378, 420, 504, 540, 630, 756, 840, 945, 1080, 1260, 1512, 1890, 2520, 2707, 3780, 5414, 7560, 8121, 10828, 13535, 16242, 18949, 21656, 24363, 27070, 32484, 37898, 40605, 48726, 54140, 56847, 64968, 73089, 75796, 81210, 94745, 97452, 108280, 113694, 121815, 146178, 151592, 162420, 170541, 189490, 194904, 227388, 243630, 284235, 292356, 324840, 341082, 365445, 378980, 454776, 487260, 511623, 568470, 584712, 682164, 730890, 757960, 852705, 974520, 1023246, 1136940, 1364328, 1461780, 1705410, 2046492, 2273880, 2558115, 2923560, 3410820, 4092984, 5116230, 6821640, 10232460, 20464920]

約数ペア:

[(1, 20464920), (2, 10232460), (3, 6821640), (4, 5116230), (5, 4092984), (6, 3410820), (7, 2923560), (8, 2558115), (9, 2273880), (10, 2046492), (12, 1705410), (14, 1461780), (15, 1364328), (18, 1136940), (20, 1023246), (21, 974520), (24, 852705), (27, 757960), (28, 730890), (30, 682164), (35, 584712), (36, 568470), (40, 511623), (42, 487260), (45, 454776), (54, 378980), (56, 365445), (60, 341082), (63, 324840), (70, 292356), (72, 284235), (84, 243630), (90, 227388), (105, 194904), (108, 189490), (120, 170541), (126, 162420), (135, 151592), (140, 146178), (168, 121815), (180, 113694), (189, 108280), (210, 97452), (216, 94745), (252, 81210), (270, 75796), (280, 73089), (315, 64968), (360, 56847), (378, 54140), (420, 48726), (504, 40605), (540, 37898), (630, 32484), (756, 27070), (840, 24363), (945, 21656), (1080, 18949), (1260, 16242), (1512, 13535), (1890, 10828), (2520, 8121), (2707, 7560), (3780, 5414)]