28581420

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{4003}}^1$

素因数の和:4039

約数の個数: 96

約数和(自身を含む): 96864768

約数和(自身を除く): 68283348

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 17, 20, 21, 28, 30, 34, 35, 42, 51, 60, 68, 70, 84, 85, 102, 105, 119, 140, 170, 204, 210, 238, 255, 340, 357, 420, 476, 510, 595, 714, 1020, 1190, 1428, 1785, 2380, 3570, 4003, 7140, 8006, 12009, 16012, 20015, 24018, 28021, 40030, 48036, 56042, 60045, 68051, 80060, 84063, 112084, 120090, 136102, 140105, 168126, 204153, 240180, 272204, 280210, 336252, 340255, 408306, 420315, 476357, 560420, 680510, 816612, 840630, 952714, 1020765, 1361020, 1429071, 1681260, 1905428, 2041530, 2381785, 2858142, 4083060, 4763570, 5716284, 7145355, 9527140, 14290710, 28581420]

約数ペア:

[(1, 28581420), (2, 14290710), (3, 9527140), (4, 7145355), (5, 5716284), (6, 4763570), (7, 4083060), (10, 2858142), (12, 2381785), (14, 2041530), (15, 1905428), (17, 1681260), (20, 1429071), (21, 1361020), (28, 1020765), (30, 952714), (34, 840630), (35, 816612), (42, 680510), (51, 560420), (60, 476357), (68, 420315), (70, 408306), (84, 340255), (85, 336252), (102, 280210), (105, 272204), (119, 240180), (140, 204153), (170, 168126), (204, 140105), (210, 136102), (238, 120090), (255, 112084), (340, 84063), (357, 80060), (420, 68051), (476, 60045), (510, 56042), (595, 48036), (714, 40030), (1020, 28021), (1190, 24018), (1428, 20015), (1785, 16012), (2380, 12009), (3570, 8006), (4003, 7140)]