1291285840

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{173}}^1\times {\mathrm{7177}}^1$

素因数の和:7376

約数の個数: 80

約数和(自身を含む): 3252323088

約数和(自身を除く): 1961037248

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 40, 52, 65, 80, 104, 130, 173, 208, 260, 346, 520, 692, 865, 1040, 1384, 1730, 2249, 2768, 3460, 4498, 6920, 7177, 8996, 11245, 13840, 14354, 17992, 22490, 28708, 35885, 35984, 44980, 57416, 71770, 89960, 93301, 114832, 143540, 179920, 186602, 287080, 373204, 466505, 574160, 746408, 933010, 1241621, 1492816, 1866020, 2483242, 3732040, 4966484, 6208105, 7464080, 9932968, 12416210, 16141073, 19865936, 24832420, 32282146, 49664840, 64564292, 80705365, 99329680, 129128584, 161410730, 258257168, 322821460, 645642920, 1291285840]

約数ペア:

[(1, 1291285840), (2, 645642920), (4, 322821460), (5, 258257168), (8, 161410730), (10, 129128584), (13, 99329680), (16, 80705365), (20, 64564292), (26, 49664840), (40, 32282146), (52, 24832420), (65, 19865936), (80, 16141073), (104, 12416210), (130, 9932968), (173, 7464080), (208, 6208105), (260, 4966484), (346, 3732040), (520, 2483242), (692, 1866020), (865, 1492816), (1040, 1241621), (1384, 933010), (1730, 746408), (2249, 574160), (2768, 466505), (3460, 373204), (4498, 287080), (6920, 186602), (7177, 179920), (8996, 143540), (11245, 114832), (13840, 93301), (14354, 89960), (17992, 71770), (22490, 57416), (28708, 44980), (35885, 35984)]