647408216

素因数分解:

$2^3\times 7^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{28687}}^1$

素因数の和:28744

約数の個数: 64

約数和(自身を含む): 1542266880

約数和(自身を除く): 894858664

約数列:

[1, 2, 4, 7, 8, 13, 14, 26, 28, 31, 52, 56, 62, 91, 104, 124, 182, 217, 248, 364, 403, 434, 728, 806, 868, 1612, 1736, 2821, 3224, 5642, 11284, 22568, 28687, 57374, 114748, 200809, 229496, 372931, 401618, 745862, 803236, 889297, 1491724, 1606472, 1778594, 2610517, 2983448, 3557188, 5221034, 6225079, 7114376, 10442068, 11560861, 12450158, 20884136, 23121722, 24900316, 46243444, 49800632, 80926027, 92486888, 161852054, 323704108, 647408216]

約数ペア:

[(1, 647408216), (2, 323704108), (4, 161852054), (7, 92486888), (8, 80926027), (13, 49800632), (14, 46243444), (26, 24900316), (28, 23121722), (31, 20884136), (52, 12450158), (56, 11560861), (62, 10442068), (91, 7114376), (104, 6225079), (124, 5221034), (182, 3557188), (217, 2983448), (248, 2610517), (364, 1778594), (403, 1606472), (434, 1491724), (728, 889297), (806, 803236), (868, 745862), (1612, 401618), (1736, 372931), (2821, 229496), (3224, 200809), (5642, 114748), (11284, 57374), (22568, 28687)]