215501990

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{97}}^1\times {\mathrm{1063}}^1$

素因数の和:1197

約数の個数: 64

約数和(自身を含む): 450455040

約数和(自身を除く): 234953050

約数列:

[1, 2, 5, 10, 11, 19, 22, 38, 55, 95, 97, 110, 190, 194, 209, 418, 485, 970, 1045, 1063, 1067, 1843, 2090, 2126, 2134, 3686, 5315, 5335, 9215, 10630, 10670, 11693, 18430, 20197, 20273, 23386, 40394, 40546, 58465, 100985, 101365, 103111, 116930, 201970, 202730, 206222, 222167, 444334, 515555, 1031110, 1110835, 1134221, 1959109, 2221670, 2268442, 3918218, 5671105, 9795545, 11342210, 19591090, 21550199, 43100398, 107750995, 215501990]

約数ペア:

[(1, 215501990), (2, 107750995), (5, 43100398), (10, 21550199), (11, 19591090), (19, 11342210), (22, 9795545), (38, 5671105), (55, 3918218), (95, 2268442), (97, 2221670), (110, 1959109), (190, 1134221), (194, 1110835), (209, 1031110), (418, 515555), (485, 444334), (970, 222167), (1045, 206222), (1063, 202730), (1067, 201970), (1843, 116930), (2090, 103111), (2126, 101365), (2134, 100985), (3686, 58465), (5315, 40546), (5335, 40394), (9215, 23386), (10630, 20273), (10670, 20197), (11693, 18430)]