21512590

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^2\times {\mathrm{23}}^1\times {\mathrm{773}}^1$

素因数の和:825

約数の個数: 48

約数和(自身を含む): 44470944

約数和(自身を除く): 22958354

約数列:

[1, 2, 5, 10, 11, 22, 23, 46, 55, 110, 115, 121, 230, 242, 253, 506, 605, 773, 1210, 1265, 1546, 2530, 2783, 3865, 5566, 7730, 8503, 13915, 17006, 17779, 27830, 35558, 42515, 85030, 88895, 93533, 177790, 187066, 195569, 391138, 467665, 935330, 977845, 1955690, 2151259, 4302518, 10756295, 21512590]

約数ペア:

[(1, 21512590), (2, 10756295), (5, 4302518), (10, 2151259), (11, 1955690), (22, 977845), (23, 935330), (46, 467665), (55, 391138), (110, 195569), (115, 187066), (121, 177790), (230, 93533), (242, 88895), (253, 85030), (506, 42515), (605, 35558), (773, 27830), (1210, 17779), (1265, 17006), (1546, 13915), (2530, 8503), (2783, 7730), (3865, 5566)]