25440660

素因数分解:

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

素因数の和:414

約数の個数: 144

約数和(自身を含む): 89910912

約数和(自身を除く): 64470252

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 28, 30, 35, 36, 42, 45, 60, 61, 63, 70, 84, 90, 105, 122, 126, 140, 180, 183, 210, 244, 252, 305, 315, 331, 366, 420, 427, 549, 610, 630, 662, 732, 854, 915, 993, 1098, 1220, 1260, 1281, 1324, 1655, 1708, 1830, 1986, 2135, 2196, 2317, 2562, 2745, 2979, 3310, 3660, 3843, 3972, 4270, 4634, 4965, 5124, 5490, 5958, 6405, 6620, 6951, 7686, 8540, 9268, 9930, 10980, 11585, 11916, 12810, 13902, 14895, 15372, 19215, 19860, 20191, 20853, 23170, 25620, 27804, 29790, 34755, 38430, 40382, 41706, 46340, 59580, 60573, 69510, 76860, 80764, 83412, 100955, 104265, 121146, 139020, 141337, 181719, 201910, 208530, 242292, 282674, 302865, 363438, 403820, 417060, 424011, 565348, 605730, 706685, 726876, 848022, 908595, 1211460, 1272033, 1413370, 1696044, 1817190, 2120055, 2544066, 2826740, 3634380, 4240110, 5088132, 6360165, 8480220, 12720330, 25440660]

約数ペア:

[(1, 25440660), (2, 12720330), (3, 8480220), (4, 6360165), (5, 5088132), (6, 4240110), (7, 3634380), (9, 2826740), (10, 2544066), (12, 2120055), (14, 1817190), (15, 1696044), (18, 1413370), (20, 1272033), (21, 1211460), (28, 908595), (30, 848022), (35, 726876), (36, 706685), (42, 605730), (45, 565348), (60, 424011), (61, 417060), (63, 403820), (70, 363438), (84, 302865), (90, 282674), (105, 242292), (122, 208530), (126, 201910), (140, 181719), (180, 141337), (183, 139020), (210, 121146), (244, 104265), (252, 100955), (305, 83412), (315, 80764), (331, 76860), (366, 69510), (420, 60573), (427, 59580), (549, 46340), (610, 41706), (630, 40382), (662, 38430), (732, 34755), (854, 29790), (915, 27804), (993, 25620), (1098, 23170), (1220, 20853), (1260, 20191), (1281, 19860), (1324, 19215), (1655, 15372), (1708, 14895), (1830, 13902), (1986, 12810), (2135, 11916), (2196, 11585), (2317, 10980), (2562, 9930), (2745, 9268), (2979, 8540), (3310, 7686), (3660, 6951), (3843, 6620), (3972, 6405), (4270, 5958), (4634, 5490), (4965, 5124)]