19887525

素因数分解:

$3^4\times 5^2\times 7^1\times {\mathrm{23}}^1\times {\mathrm{61}}^1$

素因数の和:113

約数の個数: 120

約数和(自身を含む): 44651904

約数和(自身を除く): 24764379

約数列:

[1, 3, 5, 7, 9, 15, 21, 23, 25, 27, 35, 45, 61, 63, 69, 75, 81, 105, 115, 135, 161, 175, 183, 189, 207, 225, 305, 315, 345, 405, 427, 483, 525, 549, 567, 575, 621, 675, 805, 915, 945, 1035, 1281, 1403, 1449, 1525, 1575, 1647, 1725, 1863, 2025, 2135, 2415, 2745, 2835, 3105, 3843, 4025, 4209, 4347, 4575, 4725, 4941, 5175, 6405, 7015, 7245, 8235, 9315, 9821, 10675, 11529, 12075, 12627, 13041, 13725, 14175, 15525, 19215, 21045, 21735, 24705, 29463, 32025, 34587, 35075, 36225, 37881, 41175, 46575, 49105, 57645, 63135, 65205, 88389, 96075, 105225, 108675, 113643, 123525, 147315, 172935, 189405, 245525, 265167, 288225, 315675, 326025, 441945, 568215, 736575, 795501, 864675, 947025, 1325835, 2209725, 2841075, 3977505, 6629175, 19887525]

約数ペア:

[(1, 19887525), (3, 6629175), (5, 3977505), (7, 2841075), (9, 2209725), (15, 1325835), (21, 947025), (23, 864675), (25, 795501), (27, 736575), (35, 568215), (45, 441945), (61, 326025), (63, 315675), (69, 288225), (75, 265167), (81, 245525), (105, 189405), (115, 172935), (135, 147315), (161, 123525), (175, 113643), (183, 108675), (189, 105225), (207, 96075), (225, 88389), (305, 65205), (315, 63135), (345, 57645), (405, 49105), (427, 46575), (483, 41175), (525, 37881), (549, 36225), (567, 35075), (575, 34587), (621, 32025), (675, 29463), (805, 24705), (915, 21735), (945, 21045), (1035, 19215), (1281, 15525), (1403, 14175), (1449, 13725), (1525, 13041), (1575, 12627), (1647, 12075), (1725, 11529), (1863, 10675), (2025, 9821), (2135, 9315), (2415, 8235), (2745, 7245), (2835, 7015), (3105, 6405), (3843, 5175), (4025, 4941), (4209, 4725), (4347, 4575)]