21535760

素因数分解:

$2^4\times 5^1\times {\mathrm{241}}^1\times {\mathrm{1117}}^1$

素因数の和:1371

約数の個数: 40

約数和(自身を含む): 50323416

約数和(自身を除く): 28787656

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 241, 482, 964, 1117, 1205, 1928, 2234, 2410, 3856, 4468, 4820, 5585, 8936, 9640, 11170, 17872, 19280, 22340, 44680, 89360, 269197, 538394, 1076788, 1345985, 2153576, 2691970, 4307152, 5383940, 10767880, 21535760]

約数ペア:

[(1, 21535760), (2, 10767880), (4, 5383940), (5, 4307152), (8, 2691970), (10, 2153576), (16, 1345985), (20, 1076788), (40, 538394), (80, 269197), (241, 89360), (482, 44680), (964, 22340), (1117, 19280), (1205, 17872), (1928, 11170), (2234, 9640), (2410, 8936), (3856, 5585), (4468, 4820)]