28475160

素因数分解:

$2^3\times 3^1\times 5^1\times 7^1\times {\mathrm{109}}^1\times {\mathrm{311}}^1$

素因数の和:441

約数の個数: 128

約数和(自身を含む): 98841600

約数和(自身を除く): 70366440

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 20, 21, 24, 28, 30, 35, 40, 42, 56, 60, 70, 84, 105, 109, 120, 140, 168, 210, 218, 280, 311, 327, 420, 436, 545, 622, 654, 763, 840, 872, 933, 1090, 1244, 1308, 1526, 1555, 1635, 1866, 2177, 2180, 2289, 2488, 2616, 3052, 3110, 3270, 3732, 3815, 4354, 4360, 4578, 4665, 6104, 6220, 6531, 6540, 7464, 7630, 8708, 9156, 9330, 10885, 11445, 12440, 13062, 13080, 15260, 17416, 18312, 18660, 21770, 22890, 26124, 30520, 32655, 33899, 37320, 43540, 45780, 52248, 65310, 67798, 87080, 91560, 101697, 130620, 135596, 169495, 203394, 237293, 261240, 271192, 338990, 406788, 474586, 508485, 677980, 711879, 813576, 949172, 1016970, 1186465, 1355960, 1423758, 1898344, 2033940, 2372930, 2847516, 3559395, 4067880, 4745860, 5695032, 7118790, 9491720, 14237580, 28475160]

約数ペア:

[(1, 28475160), (2, 14237580), (3, 9491720), (4, 7118790), (5, 5695032), (6, 4745860), (7, 4067880), (8, 3559395), (10, 2847516), (12, 2372930), (14, 2033940), (15, 1898344), (20, 1423758), (21, 1355960), (24, 1186465), (28, 1016970), (30, 949172), (35, 813576), (40, 711879), (42, 677980), (56, 508485), (60, 474586), (70, 406788), (84, 338990), (105, 271192), (109, 261240), (120, 237293), (140, 203394), (168, 169495), (210, 135596), (218, 130620), (280, 101697), (311, 91560), (327, 87080), (420, 67798), (436, 65310), (545, 52248), (622, 45780), (654, 43540), (763, 37320), (840, 33899), (872, 32655), (933, 30520), (1090, 26124), (1244, 22890), (1308, 21770), (1526, 18660), (1555, 18312), (1635, 17416), (1866, 15260), (2177, 13080), (2180, 13062), (2289, 12440), (2488, 11445), (2616, 10885), (3052, 9330), (3110, 9156), (3270, 8708), (3732, 7630), (3815, 7464), (4354, 6540), (4360, 6531), (4578, 6220), (4665, 6104)]