28497780

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{67}}^1\times {\mathrm{139}}^1$

素因数の和:238

約数の個数: 144

約数和(自身を含む): 93562560

約数和(自身を除く): 65064780

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 17, 18, 20, 30, 34, 36, 45, 51, 60, 67, 68, 85, 90, 102, 134, 139, 153, 170, 180, 201, 204, 255, 268, 278, 306, 335, 340, 402, 417, 510, 556, 603, 612, 670, 695, 765, 804, 834, 1005, 1020, 1139, 1206, 1251, 1340, 1390, 1530, 1668, 2010, 2085, 2278, 2363, 2412, 2502, 2780, 3015, 3060, 3417, 4020, 4170, 4556, 4726, 5004, 5695, 6030, 6255, 6834, 7089, 8340, 9313, 9452, 10251, 11390, 11815, 12060, 12510, 13668, 14178, 17085, 18626, 20502, 21267, 22780, 23630, 25020, 27939, 28356, 34170, 35445, 37252, 41004, 42534, 46565, 47260, 51255, 55878, 68340, 70890, 83817, 85068, 93130, 102510, 106335, 111756, 139695, 141780, 158321, 167634, 186260, 205020, 212670, 279390, 316642, 335268, 419085, 425340, 474963, 558780, 633284, 791605, 838170, 949926, 1424889, 1583210, 1676340, 1899852, 2374815, 2849778, 3166420, 4749630, 5699556, 7124445, 9499260, 14248890, 28497780]

約数ペア:

[(1, 28497780), (2, 14248890), (3, 9499260), (4, 7124445), (5, 5699556), (6, 4749630), (9, 3166420), (10, 2849778), (12, 2374815), (15, 1899852), (17, 1676340), (18, 1583210), (20, 1424889), (30, 949926), (34, 838170), (36, 791605), (45, 633284), (51, 558780), (60, 474963), (67, 425340), (68, 419085), (85, 335268), (90, 316642), (102, 279390), (134, 212670), (139, 205020), (153, 186260), (170, 167634), (180, 158321), (201, 141780), (204, 139695), (255, 111756), (268, 106335), (278, 102510), (306, 93130), (335, 85068), (340, 83817), (402, 70890), (417, 68340), (510, 55878), (556, 51255), (603, 47260), (612, 46565), (670, 42534), (695, 41004), (765, 37252), (804, 35445), (834, 34170), (1005, 28356), (1020, 27939), (1139, 25020), (1206, 23630), (1251, 22780), (1340, 21267), (1390, 20502), (1530, 18626), (1668, 17085), (2010, 14178), (2085, 13668), (2278, 12510), (2363, 12060), (2412, 11815), (2502, 11390), (2780, 10251), (3015, 9452), (3060, 9313), (3417, 8340), (4020, 7089), (4170, 6834), (4556, 6255), (4726, 6030), (5004, 5695)]