28782180

素因数分解:

$2^2\times 3^2\times 5^1\times 7^1\times {\mathrm{53}}^1\times {\mathrm{431}}^1$

素因数の和:506

約数の個数: 144

約数和(自身を含む): 101896704

約数和(自身を除く): 73114524

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 28, 30, 35, 36, 42, 45, 53, 60, 63, 70, 84, 90, 105, 106, 126, 140, 159, 180, 210, 212, 252, 265, 315, 318, 371, 420, 431, 477, 530, 630, 636, 742, 795, 862, 954, 1060, 1113, 1260, 1293, 1484, 1590, 1724, 1855, 1908, 2155, 2226, 2385, 2586, 3017, 3180, 3339, 3710, 3879, 4310, 4452, 4770, 5172, 5565, 6034, 6465, 6678, 7420, 7758, 8620, 9051, 9540, 11130, 12068, 12930, 13356, 15085, 15516, 16695, 18102, 19395, 22260, 22843, 25860, 27153, 30170, 33390, 36204, 38790, 45255, 45686, 54306, 60340, 66780, 68529, 77580, 90510, 91372, 108612, 114215, 135765, 137058, 159901, 181020, 205587, 228430, 271530, 274116, 319802, 342645, 411174, 456860, 479703, 543060, 639604, 685290, 799505, 822348, 959406, 1027935, 1370580, 1439109, 1599010, 1918812, 2055870, 2398515, 2878218, 3198020, 4111740, 4797030, 5756436, 7195545, 9594060, 14391090, 28782180]

約数ペア:

[(1, 28782180), (2, 14391090), (3, 9594060), (4, 7195545), (5, 5756436), (6, 4797030), (7, 4111740), (9, 3198020), (10, 2878218), (12, 2398515), (14, 2055870), (15, 1918812), (18, 1599010), (20, 1439109), (21, 1370580), (28, 1027935), (30, 959406), (35, 822348), (36, 799505), (42, 685290), (45, 639604), (53, 543060), (60, 479703), (63, 456860), (70, 411174), (84, 342645), (90, 319802), (105, 274116), (106, 271530), (126, 228430), (140, 205587), (159, 181020), (180, 159901), (210, 137058), (212, 135765), (252, 114215), (265, 108612), (315, 91372), (318, 90510), (371, 77580), (420, 68529), (431, 66780), (477, 60340), (530, 54306), (630, 45686), (636, 45255), (742, 38790), (795, 36204), (862, 33390), (954, 30170), (1060, 27153), (1113, 25860), (1260, 22843), (1293, 22260), (1484, 19395), (1590, 18102), (1724, 16695), (1855, 15516), (1908, 15085), (2155, 13356), (2226, 12930), (2385, 12068), (2586, 11130), (3017, 9540), (3180, 9051), (3339, 8620), (3710, 7758), (3879, 7420), (4310, 6678), (4452, 6465), (4770, 6034), (5172, 5565)]