28307790

素因数分解:

$2^1\times 3^2\times 5^1\times 7^4\times {\mathrm{131}}^1$

素因数の和:172

約数の個数: 120

約数和(自身を含む): 86517288

約数和(自身を除く): 58209498

約数列:

[1, 2, 3, 5, 6, 7, 9, 10, 14, 15, 18, 21, 30, 35, 42, 45, 49, 63, 70, 90, 98, 105, 126, 131, 147, 210, 245, 262, 294, 315, 343, 393, 441, 490, 630, 655, 686, 735, 786, 882, 917, 1029, 1179, 1310, 1470, 1715, 1834, 1965, 2058, 2205, 2358, 2401, 2751, 3087, 3430, 3930, 4410, 4585, 4802, 5145, 5502, 5895, 6174, 6419, 7203, 8253, 9170, 10290, 11790, 12005, 12838, 13755, 14406, 15435, 16506, 19257, 21609, 24010, 27510, 30870, 32095, 36015, 38514, 41265, 43218, 44933, 57771, 64190, 72030, 82530, 89866, 96285, 108045, 115542, 134799, 192570, 216090, 224665, 269598, 288855, 314531, 404397, 449330, 577710, 629062, 673995, 808794, 943593, 1347990, 1572655, 1887186, 2021985, 2830779, 3145310, 4043970, 4717965, 5661558, 9435930, 14153895, 28307790]

約数ペア:

[(1, 28307790), (2, 14153895), (3, 9435930), (5, 5661558), (6, 4717965), (7, 4043970), (9, 3145310), (10, 2830779), (14, 2021985), (15, 1887186), (18, 1572655), (21, 1347990), (30, 943593), (35, 808794), (42, 673995), (45, 629062), (49, 577710), (63, 449330), (70, 404397), (90, 314531), (98, 288855), (105, 269598), (126, 224665), (131, 216090), (147, 192570), (210, 134799), (245, 115542), (262, 108045), (294, 96285), (315, 89866), (343, 82530), (393, 72030), (441, 64190), (490, 57771), (630, 44933), (655, 43218), (686, 41265), (735, 38514), (786, 36015), (882, 32095), (917, 30870), (1029, 27510), (1179, 24010), (1310, 21609), (1470, 19257), (1715, 16506), (1834, 15435), (1965, 14406), (2058, 13755), (2205, 12838), (2358, 12005), (2401, 11790), (2751, 10290), (3087, 9170), (3430, 8253), (3930, 7203), (4410, 6419), (4585, 6174), (4802, 5895), (5145, 5502)]