16513980

素因数分解:

$2^2\times 3^1\times 5^1\times 7^2\times {\mathrm{41}}^1\times {\mathrm{137}}^1$

素因数の和:204

約数の個数: 144

約数和(自身を含む): 55502496

約数和(自身を除く): 38988516

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 41, 42, 49, 60, 70, 82, 84, 98, 105, 123, 137, 140, 147, 164, 196, 205, 210, 245, 246, 274, 287, 294, 410, 411, 420, 490, 492, 548, 574, 588, 615, 685, 735, 820, 822, 861, 959, 980, 1148, 1230, 1370, 1435, 1470, 1644, 1722, 1918, 2009, 2055, 2460, 2740, 2870, 2877, 2940, 3444, 3836, 4018, 4110, 4305, 4795, 5617, 5740, 5754, 6027, 6713, 8036, 8220, 8610, 9590, 10045, 11234, 11508, 12054, 13426, 14385, 16851, 17220, 19180, 20090, 20139, 22468, 24108, 26852, 28085, 28770, 30135, 33565, 33702, 39319, 40180, 40278, 56170, 57540, 60270, 67130, 67404, 78638, 80556, 84255, 100695, 112340, 117957, 120540, 134260, 157276, 168510, 196595, 201390, 235914, 275233, 337020, 393190, 402780, 471828, 550466, 589785, 786380, 825699, 1100932, 1179570, 1376165, 1651398, 2359140, 2752330, 3302796, 4128495, 5504660, 8256990, 16513980]

約数ペア:

[(1, 16513980), (2, 8256990), (3, 5504660), (4, 4128495), (5, 3302796), (6, 2752330), (7, 2359140), (10, 1651398), (12, 1376165), (14, 1179570), (15, 1100932), (20, 825699), (21, 786380), (28, 589785), (30, 550466), (35, 471828), (41, 402780), (42, 393190), (49, 337020), (60, 275233), (70, 235914), (82, 201390), (84, 196595), (98, 168510), (105, 157276), (123, 134260), (137, 120540), (140, 117957), (147, 112340), (164, 100695), (196, 84255), (205, 80556), (210, 78638), (245, 67404), (246, 67130), (274, 60270), (287, 57540), (294, 56170), (410, 40278), (411, 40180), (420, 39319), (490, 33702), (492, 33565), (548, 30135), (574, 28770), (588, 28085), (615, 26852), (685, 24108), (735, 22468), (820, 20139), (822, 20090), (861, 19180), (959, 17220), (980, 16851), (1148, 14385), (1230, 13426), (1370, 12054), (1435, 11508), (1470, 11234), (1644, 10045), (1722, 9590), (1918, 8610), (2009, 8220), (2055, 8036), (2460, 6713), (2740, 6027), (2870, 5754), (2877, 5740), (2940, 5617), (3444, 4795), (3836, 4305), (4018, 4110)]