278912270

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{9887}}^1$

素因数の和:9945

約数の個数: 64

約数和(自身を含む): 637894656

約数和(自身を除く): 358982386

約数列:

[1, 2, 5, 7, 10, 13, 14, 26, 31, 35, 62, 65, 70, 91, 130, 155, 182, 217, 310, 403, 434, 455, 806, 910, 1085, 2015, 2170, 2821, 4030, 5642, 9887, 14105, 19774, 28210, 49435, 69209, 98870, 128531, 138418, 257062, 306497, 346045, 612994, 642655, 692090, 899717, 1285310, 1532485, 1799434, 2145479, 3064970, 3984461, 4290958, 4498585, 7968922, 8997170, 10727395, 19922305, 21454790, 27891227, 39844610, 55782454, 139456135, 278912270]

約数ペア:

[(1, 278912270), (2, 139456135), (5, 55782454), (7, 39844610), (10, 27891227), (13, 21454790), (14, 19922305), (26, 10727395), (31, 8997170), (35, 7968922), (62, 4498585), (65, 4290958), (70, 3984461), (91, 3064970), (130, 2145479), (155, 1799434), (182, 1532485), (217, 1285310), (310, 899717), (403, 692090), (434, 642655), (455, 612994), (806, 346045), (910, 306497), (1085, 257062), (2015, 138418), (2170, 128531), (2821, 98870), (4030, 69209), (5642, 49435), (9887, 28210), (14105, 19774)]