1812147890

素因数分解:

$2^1\times 5^1\times 7^3\times {\mathrm{37}}^1\times {\mathrm{109}}^1\times {\mathrm{131}}^1$

素因数の和:305

約数の個数: 128

約数和(自身を含む): 3972672000

約数和(自身を除く): 2160524110

約数列:

[1, 2, 5, 7, 10, 14, 35, 37, 49, 70, 74, 98, 109, 131, 185, 218, 245, 259, 262, 343, 370, 490, 518, 545, 655, 686, 763, 917, 1090, 1295, 1310, 1526, 1715, 1813, 1834, 2590, 3430, 3626, 3815, 4033, 4585, 4847, 5341, 6419, 7630, 8066, 9065, 9170, 9694, 10682, 12691, 12838, 14279, 18130, 20165, 24235, 25382, 26705, 28231, 28558, 32095, 33929, 37387, 40330, 44933, 48470, 53410, 56462, 63455, 64190, 67858, 71395, 74774, 89866, 99953, 126910, 141155, 142790, 169645, 186935, 197617, 199906, 224665, 237503, 282310, 339290, 373870, 395234, 449330, 475006, 499765, 528323, 699671, 988085, 999530, 1056646, 1187515, 1383319, 1399342, 1662521, 1976170, 2375030, 2641615, 2766638, 3325042, 3498355, 3698261, 4897697, 5283230, 6916595, 6996710, 7396522, 8312605, 9795394, 13833190, 16625210, 18491305, 24488485, 25887827, 36982610, 48976970, 51775654, 129439135, 181214789, 258878270, 362429578, 906073945, 1812147890]

約数ペア:

[(1, 1812147890), (2, 906073945), (5, 362429578), (7, 258878270), (10, 181214789), (14, 129439135), (35, 51775654), (37, 48976970), (49, 36982610), (70, 25887827), (74, 24488485), (98, 18491305), (109, 16625210), (131, 13833190), (185, 9795394), (218, 8312605), (245, 7396522), (259, 6996710), (262, 6916595), (343, 5283230), (370, 4897697), (490, 3698261), (518, 3498355), (545, 3325042), (655, 2766638), (686, 2641615), (763, 2375030), (917, 1976170), (1090, 1662521), (1295, 1399342), (1310, 1383319), (1526, 1187515), (1715, 1056646), (1813, 999530), (1834, 988085), (2590, 699671), (3430, 528323), (3626, 499765), (3815, 475006), (4033, 449330), (4585, 395234), (4847, 373870), (5341, 339290), (6419, 282310), (7630, 237503), (8066, 224665), (9065, 199906), (9170, 197617), (9694, 186935), (10682, 169645), (12691, 142790), (12838, 141155), (14279, 126910), (18130, 99953), (20165, 89866), (24235, 74774), (25382, 71395), (26705, 67858), (28231, 64190), (28558, 63455), (32095, 56462), (33929, 53410), (37387, 48470), (40330, 44933)]