279927830

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{9923}}^1$

素因数の和:9981

約数の個数: 64

約数和(自身を含む): 640217088

約数和(自身を除く): 360289258

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, 9923, 14105, 19846, 28210, 49615, 69461, 99230, 128999, 138922, 257998, 307613, 347305, 615226, 644995, 694610, 902993, 1289990, 1538065, 1805986, 2153291, 3076130, 3998969, 4306582, 4514965, 7997938, 9029930, 10766455, 19994845, 21532910, 27992783, 39989690, 55985566, 139963915, 279927830]

約数ペア:

[(1, 279927830), (2, 139963915), (5, 55985566), (7, 39989690), (10, 27992783), (13, 21532910), (14, 19994845), (26, 10766455), (31, 9029930), (35, 7997938), (62, 4514965), (65, 4306582), (70, 3998969), (91, 3076130), (130, 2153291), (155, 1805986), (182, 1538065), (217, 1289990), (310, 902993), (403, 694610), (434, 644995), (455, 615226), (806, 347305), (910, 307613), (1085, 257998), (2015, 138922), (2170, 128999), (2821, 99230), (4030, 69461), (5642, 49615), (9923, 28210), (14105, 19846)]