12720420

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{4157}}^1$

素因数の和:4189

約数の個数: 72

約数和(自身を含む): 40864824

約数和(自身を除く): 28144404

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 17, 18, 20, 30, 34, 36, 45, 51, 60, 68, 85, 90, 102, 153, 170, 180, 204, 255, 306, 340, 510, 612, 765, 1020, 1530, 3060, 4157, 8314, 12471, 16628, 20785, 24942, 37413, 41570, 49884, 62355, 70669, 74826, 83140, 124710, 141338, 149652, 187065, 212007, 249420, 282676, 353345, 374130, 424014, 636021, 706690, 748260, 848028, 1060035, 1272042, 1413380, 2120070, 2544084, 3180105, 4240140, 6360210, 12720420]

約数ペア:

[(1, 12720420), (2, 6360210), (3, 4240140), (4, 3180105), (5, 2544084), (6, 2120070), (9, 1413380), (10, 1272042), (12, 1060035), (15, 848028), (17, 748260), (18, 706690), (20, 636021), (30, 424014), (34, 374130), (36, 353345), (45, 282676), (51, 249420), (60, 212007), (68, 187065), (85, 149652), (90, 141338), (102, 124710), (153, 83140), (170, 74826), (180, 70669), (204, 62355), (255, 49884), (306, 41570), (340, 37413), (510, 24942), (612, 20785), (765, 16628), (1020, 12471), (1530, 8314), (3060, 4157)]