21383560

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{2113}}^1$

素因数の和:2158

約数の個数: 64

約数和(自身を含む): 54794880

約数和(自身を除く): 33411320

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 23, 40, 44, 46, 55, 88, 92, 110, 115, 184, 220, 230, 253, 440, 460, 506, 920, 1012, 1265, 2024, 2113, 2530, 4226, 5060, 8452, 10120, 10565, 16904, 21130, 23243, 42260, 46486, 48599, 84520, 92972, 97198, 116215, 185944, 194396, 232430, 242995, 388792, 464860, 485990, 534589, 929720, 971980, 1069178, 1943960, 2138356, 2672945, 4276712, 5345890, 10691780, 21383560]

約数ペア:

[(1, 21383560), (2, 10691780), (4, 5345890), (5, 4276712), (8, 2672945), (10, 2138356), (11, 1943960), (20, 1069178), (22, 971980), (23, 929720), (40, 534589), (44, 485990), (46, 464860), (55, 388792), (88, 242995), (92, 232430), (110, 194396), (115, 185944), (184, 116215), (220, 97198), (230, 92972), (253, 84520), (440, 48599), (460, 46486), (506, 42260), (920, 23243), (1012, 21130), (1265, 16904), (2024, 10565), (2113, 10120), (2530, 8452), (4226, 5060)]