21543520

素因数分解:

$2^5\times 5^1\times {\mathrm{29}}^1\times {\mathrm{4643}}^1$

素因数の和:4687

約数の個数: 48

約数和(自身を含む): 52662960

約数和(自身を除く): 31119440

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 29, 32, 40, 58, 80, 116, 145, 160, 232, 290, 464, 580, 928, 1160, 2320, 4640, 4643, 9286, 18572, 23215, 37144, 46430, 74288, 92860, 134647, 148576, 185720, 269294, 371440, 538588, 673235, 742880, 1077176, 1346470, 2154352, 2692940, 4308704, 5385880, 10771760, 21543520]

約数ペア:

[(1, 21543520), (2, 10771760), (4, 5385880), (5, 4308704), (8, 2692940), (10, 2154352), (16, 1346470), (20, 1077176), (29, 742880), (32, 673235), (40, 538588), (58, 371440), (80, 269294), (116, 185720), (145, 148576), (160, 134647), (232, 92860), (290, 74288), (464, 46430), (580, 37144), (928, 23215), (1160, 18572), (2320, 9286), (4640, 4643)]