81435780

素因数分解:

$2^2\times 3^4\times 5^1\times {\mathrm{17}}^1\times {\mathrm{2957}}^1$

素因数の和:2995

約数の個数: 120

約数和(自身を含む): 270586008

約数和(自身を除く): 189150228

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 17, 18, 20, 27, 30, 34, 36, 45, 51, 54, 60, 68, 81, 85, 90, 102, 108, 135, 153, 162, 170, 180, 204, 255, 270, 306, 324, 340, 405, 459, 510, 540, 612, 765, 810, 918, 1020, 1377, 1530, 1620, 1836, 2295, 2754, 2957, 3060, 4590, 5508, 5914, 6885, 8871, 9180, 11828, 13770, 14785, 17742, 26613, 27540, 29570, 35484, 44355, 50269, 53226, 59140, 79839, 88710, 100538, 106452, 133065, 150807, 159678, 177420, 201076, 239517, 251345, 266130, 301614, 319356, 399195, 452421, 479034, 502690, 532260, 603228, 754035, 798390, 904842, 958068, 1005380, 1197585, 1357263, 1508070, 1596780, 1809684, 2262105, 2395170, 2714526, 3016140, 4071789, 4524210, 4790340, 5429052, 6786315, 8143578, 9048420, 13572630, 16287156, 20358945, 27145260, 40717890, 81435780]

約数ペア:

[(1, 81435780), (2, 40717890), (3, 27145260), (4, 20358945), (5, 16287156), (6, 13572630), (9, 9048420), (10, 8143578), (12, 6786315), (15, 5429052), (17, 4790340), (18, 4524210), (20, 4071789), (27, 3016140), (30, 2714526), (34, 2395170), (36, 2262105), (45, 1809684), (51, 1596780), (54, 1508070), (60, 1357263), (68, 1197585), (81, 1005380), (85, 958068), (90, 904842), (102, 798390), (108, 754035), (135, 603228), (153, 532260), (162, 502690), (170, 479034), (180, 452421), (204, 399195), (255, 319356), (270, 301614), (306, 266130), (324, 251345), (340, 239517), (405, 201076), (459, 177420), (510, 159678), (540, 150807), (612, 133065), (765, 106452), (810, 100538), (918, 88710), (1020, 79839), (1377, 59140), (1530, 53226), (1620, 50269), (1836, 44355), (2295, 35484), (2754, 29570), (2957, 27540), (3060, 26613), (4590, 17742), (5508, 14785), (5914, 13770), (6885, 11828), (8871, 9180)]