641438880

素因数分解:

$2^5\times 3^1\times 5^1\times {\mathrm{101}}^2\times {\mathrm{131}}^1$

素因数の和:351

約数の個数: 144

約数和(自身を含む): 2056313952

約数和(自身を除く): 1414875072

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 32, 40, 48, 60, 80, 96, 101, 120, 131, 160, 202, 240, 262, 303, 393, 404, 480, 505, 524, 606, 655, 786, 808, 1010, 1048, 1212, 1310, 1515, 1572, 1616, 1965, 2020, 2096, 2424, 2620, 3030, 3144, 3232, 3930, 4040, 4192, 4848, 5240, 6060, 6288, 7860, 8080, 9696, 10201, 10480, 12120, 12576, 13231, 15720, 16160, 20402, 20960, 24240, 26462, 30603, 31440, 39693, 40804, 48480, 51005, 52924, 61206, 62880, 66155, 79386, 81608, 102010, 105848, 122412, 132310, 153015, 158772, 163216, 198465, 204020, 211696, 244824, 264620, 306030, 317544, 326432, 396930, 408040, 423392, 489648, 529240, 612060, 635088, 793860, 816080, 979296, 1058480, 1224120, 1270176, 1336331, 1587720, 1632160, 2116960, 2448240, 2672662, 3175440, 4008993, 4896480, 5345324, 6350880, 6681655, 8017986, 10690648, 13363310, 16035972, 20044965, 21381296, 26726620, 32071944, 40089930, 42762592, 53453240, 64143888, 80179860, 106906480, 128287776, 160359720, 213812960, 320719440, 641438880]

約数ペア:

[(1, 641438880), (2, 320719440), (3, 213812960), (4, 160359720), (5, 128287776), (6, 106906480), (8, 80179860), (10, 64143888), (12, 53453240), (15, 42762592), (16, 40089930), (20, 32071944), (24, 26726620), (30, 21381296), (32, 20044965), (40, 16035972), (48, 13363310), (60, 10690648), (80, 8017986), (96, 6681655), (101, 6350880), (120, 5345324), (131, 4896480), (160, 4008993), (202, 3175440), (240, 2672662), (262, 2448240), (303, 2116960), (393, 1632160), (404, 1587720), (480, 1336331), (505, 1270176), (524, 1224120), (606, 1058480), (655, 979296), (786, 816080), (808, 793860), (1010, 635088), (1048, 612060), (1212, 529240), (1310, 489648), (1515, 423392), (1572, 408040), (1616, 396930), (1965, 326432), (2020, 317544), (2096, 306030), (2424, 264620), (2620, 244824), (3030, 211696), (3144, 204020), (3232, 198465), (3930, 163216), (4040, 158772), (4192, 153015), (4848, 132310), (5240, 122412), (6060, 105848), (6288, 102010), (7860, 81608), (8080, 79386), (9696, 66155), (10201, 62880), (10480, 61206), (12120, 52924), (12576, 51005), (13231, 48480), (15720, 40804), (16160, 39693), (20402, 31440), (20960, 30603), (24240, 26462)]