21175560

素因数分解:

$2^3\times 3^3\times 5^1\times 7^1\times {\mathrm{2801}}^1$

素因数の和:2828

約数の個数: 128

約数和(自身を含む): 80697600

約数和(自身を除く): 59522040

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, 2801, 3780, 5602, 7560, 8403, 11204, 14005, 16806, 19607, 22408, 25209, 28010, 33612, 39214, 42015, 50418, 56020, 58821, 67224, 75627, 78428, 84030, 98035, 100836, 112040, 117642, 126045, 151254, 156856, 168060, 176463, 196070, 201672, 235284, 252090, 294105, 302508, 336120, 352926, 378135, 392140, 470568, 504180, 529389, 588210, 605016, 705852, 756270, 784280, 882315, 1008360, 1058778, 1176420, 1411704, 1512540, 1764630, 2117556, 2352840, 2646945, 3025080, 3529260, 4235112, 5293890, 7058520, 10587780, 21175560]

約数ペア:

[(1, 21175560), (2, 10587780), (3, 7058520), (4, 5293890), (5, 4235112), (6, 3529260), (7, 3025080), (8, 2646945), (9, 2352840), (10, 2117556), (12, 1764630), (14, 1512540), (15, 1411704), (18, 1176420), (20, 1058778), (21, 1008360), (24, 882315), (27, 784280), (28, 756270), (30, 705852), (35, 605016), (36, 588210), (40, 529389), (42, 504180), (45, 470568), (54, 392140), (56, 378135), (60, 352926), (63, 336120), (70, 302508), (72, 294105), (84, 252090), (90, 235284), (105, 201672), (108, 196070), (120, 176463), (126, 168060), (135, 156856), (140, 151254), (168, 126045), (180, 117642), (189, 112040), (210, 100836), (216, 98035), (252, 84030), (270, 78428), (280, 75627), (315, 67224), (360, 58821), (378, 56020), (420, 50418), (504, 42015), (540, 39214), (630, 33612), (756, 28010), (840, 25209), (945, 22408), (1080, 19607), (1260, 16806), (1512, 14005), (1890, 11204), (2520, 8403), (2801, 7560), (3780, 5602)]