21647384

素因数分解:

$2^3\times {\mathrm{11}}^3\times {\mathrm{19}}^1\times {\mathrm{107}}^1$

素因数の和:165

約数の個数: 64

約数和(自身を含む): 47433600

約数和(自身を除く): 25786216

約数列:

[1, 2, 4, 8, 11, 19, 22, 38, 44, 76, 88, 107, 121, 152, 209, 214, 242, 418, 428, 484, 836, 856, 968, 1177, 1331, 1672, 2033, 2299, 2354, 2662, 4066, 4598, 4708, 5324, 8132, 9196, 9416, 10648, 12947, 16264, 18392, 22363, 25289, 25894, 44726, 50578, 51788, 89452, 101156, 103576, 142417, 178904, 202312, 245993, 284834, 491986, 569668, 983972, 1139336, 1967944, 2705923, 5411846, 10823692, 21647384]

約数ペア:

[(1, 21647384), (2, 10823692), (4, 5411846), (8, 2705923), (11, 1967944), (19, 1139336), (22, 983972), (38, 569668), (44, 491986), (76, 284834), (88, 245993), (107, 202312), (121, 178904), (152, 142417), (209, 103576), (214, 101156), (242, 89452), (418, 51788), (428, 50578), (484, 44726), (836, 25894), (856, 25289), (968, 22363), (1177, 18392), (1331, 16264), (1672, 12947), (2033, 10648), (2299, 9416), (2354, 9196), (2662, 8132), (4066, 5324), (4598, 4708)]