21043960

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{4421}}^1$

素因数の和:4456

約数の個数: 64

約数和(自身を含む): 57309120

約数和(自身を除く): 36265160

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 17, 20, 28, 34, 35, 40, 56, 68, 70, 85, 119, 136, 140, 170, 238, 280, 340, 476, 595, 680, 952, 1190, 2380, 4421, 4760, 8842, 17684, 22105, 30947, 35368, 44210, 61894, 75157, 88420, 123788, 150314, 154735, 176840, 247576, 300628, 309470, 375785, 526099, 601256, 618940, 751570, 1052198, 1237880, 1503140, 2104396, 2630495, 3006280, 4208792, 5260990, 10521980, 21043960]

約数ペア:

[(1, 21043960), (2, 10521980), (4, 5260990), (5, 4208792), (7, 3006280), (8, 2630495), (10, 2104396), (14, 1503140), (17, 1237880), (20, 1052198), (28, 751570), (34, 618940), (35, 601256), (40, 526099), (56, 375785), (68, 309470), (70, 300628), (85, 247576), (119, 176840), (136, 154735), (140, 150314), (170, 123788), (238, 88420), (280, 75157), (340, 61894), (476, 44210), (595, 35368), (680, 30947), (952, 22105), (1190, 17684), (2380, 8842), (4421, 4760)]