21200550

素因数分解:

$2^1\times 3^1\times 5^2\times 7^1\times {\mathrm{61}}^1\times {\mathrm{331}}^1$

素因数の和:414

約数の個数: 96

約数和(自身を含む): 61257984

約数和(自身を除く): 40057434

約数列:

[1, 2, 3, 5, 6, 7, 10, 14, 15, 21, 25, 30, 35, 42, 50, 61, 70, 75, 105, 122, 150, 175, 183, 210, 305, 331, 350, 366, 427, 525, 610, 662, 854, 915, 993, 1050, 1281, 1525, 1655, 1830, 1986, 2135, 2317, 2562, 3050, 3310, 4270, 4575, 4634, 4965, 6405, 6951, 8275, 9150, 9930, 10675, 11585, 12810, 13902, 16550, 20191, 21350, 23170, 24825, 32025, 34755, 40382, 49650, 57925, 60573, 64050, 69510, 100955, 115850, 121146, 141337, 173775, 201910, 282674, 302865, 347550, 424011, 504775, 605730, 706685, 848022, 1009550, 1413370, 1514325, 2120055, 3028650, 3533425, 4240110, 7066850, 10600275, 21200550]

約数ペア:

[(1, 21200550), (2, 10600275), (3, 7066850), (5, 4240110), (6, 3533425), (7, 3028650), (10, 2120055), (14, 1514325), (15, 1413370), (21, 1009550), (25, 848022), (30, 706685), (35, 605730), (42, 504775), (50, 424011), (61, 347550), (70, 302865), (75, 282674), (105, 201910), (122, 173775), (150, 141337), (175, 121146), (183, 115850), (210, 100955), (305, 69510), (331, 64050), (350, 60573), (366, 57925), (427, 49650), (525, 40382), (610, 34755), (662, 32025), (854, 24825), (915, 23170), (993, 21350), (1050, 20191), (1281, 16550), (1525, 13902), (1655, 12810), (1830, 11585), (1986, 10675), (2135, 9930), (2317, 9150), (2562, 8275), (3050, 6951), (3310, 6405), (4270, 4965), (4575, 4634)]