21787524

素因数分解:

$2^2\times 3^2\times {\mathrm{11}}^1\times {\mathrm{37}}^1\times {\mathrm{1487}}^1$

素因数の和:1545

約数の個数: 72

約数和(自身を含む): 61746048

約数和(自身を除く): 39958524

約数列:

[1, 2, 3, 4, 6, 9, 11, 12, 18, 22, 33, 36, 37, 44, 66, 74, 99, 111, 132, 148, 198, 222, 333, 396, 407, 444, 666, 814, 1221, 1332, 1487, 1628, 2442, 2974, 3663, 4461, 4884, 5948, 7326, 8922, 13383, 14652, 16357, 17844, 26766, 32714, 49071, 53532, 55019, 65428, 98142, 110038, 147213, 165057, 196284, 220076, 294426, 330114, 495171, 588852, 605209, 660228, 990342, 1210418, 1815627, 1980684, 2420836, 3631254, 5446881, 7262508, 10893762, 21787524]

約数ペア:

[(1, 21787524), (2, 10893762), (3, 7262508), (4, 5446881), (6, 3631254), (9, 2420836), (11, 1980684), (12, 1815627), (18, 1210418), (22, 990342), (33, 660228), (36, 605209), (37, 588852), (44, 495171), (66, 330114), (74, 294426), (99, 220076), (111, 196284), (132, 165057), (148, 147213), (198, 110038), (222, 98142), (333, 65428), (396, 55019), (407, 53532), (444, 49071), (666, 32714), (814, 26766), (1221, 17844), (1332, 16357), (1487, 14652), (1628, 13383), (2442, 8922), (2974, 7326), (3663, 5948), (4461, 4884)]