20920560

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{61}}^1\times {\mathrm{1429}}^1$

素因数の和:1506

約数の個数: 80

約数和(自身を含む): 65963040

約数和(自身を除く): 45042480

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 40, 48, 60, 61, 80, 120, 122, 183, 240, 244, 305, 366, 488, 610, 732, 915, 976, 1220, 1429, 1464, 1830, 2440, 2858, 2928, 3660, 4287, 4880, 5716, 7145, 7320, 8574, 11432, 14290, 14640, 17148, 21435, 22864, 28580, 34296, 42870, 57160, 68592, 85740, 87169, 114320, 171480, 174338, 261507, 342960, 348676, 435845, 523014, 697352, 871690, 1046028, 1307535, 1394704, 1743380, 2092056, 2615070, 3486760, 4184112, 5230140, 6973520, 10460280, 20920560]

約数ペア:

[(1, 20920560), (2, 10460280), (3, 6973520), (4, 5230140), (5, 4184112), (6, 3486760), (8, 2615070), (10, 2092056), (12, 1743380), (15, 1394704), (16, 1307535), (20, 1046028), (24, 871690), (30, 697352), (40, 523014), (48, 435845), (60, 348676), (61, 342960), (80, 261507), (120, 174338), (122, 171480), (183, 114320), (240, 87169), (244, 85740), (305, 68592), (366, 57160), (488, 42870), (610, 34296), (732, 28580), (915, 22864), (976, 21435), (1220, 17148), (1429, 14640), (1464, 14290), (1830, 11432), (2440, 8574), (2858, 7320), (2928, 7145), (3660, 5716), (4287, 4880)]