90640280

素因数分解:

$2^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{67}}^1\times {\mathrm{1091}}^1$

素因数の和:1200

約数の個数: 64

約数和(自身を含む): 213857280

約数和(自身を除く): 123217000

約数列:

[1, 2, 4, 5, 8, 10, 20, 31, 40, 62, 67, 124, 134, 155, 248, 268, 310, 335, 536, 620, 670, 1091, 1240, 1340, 2077, 2182, 2680, 4154, 4364, 5455, 8308, 8728, 10385, 10910, 16616, 20770, 21820, 33821, 41540, 43640, 67642, 73097, 83080, 135284, 146194, 169105, 270568, 292388, 338210, 365485, 584776, 676420, 730970, 1352840, 1461940, 2266007, 2923880, 4532014, 9064028, 11330035, 18128056, 22660070, 45320140, 90640280]

約数ペア:

[(1, 90640280), (2, 45320140), (4, 22660070), (5, 18128056), (8, 11330035), (10, 9064028), (20, 4532014), (31, 2923880), (40, 2266007), (62, 1461940), (67, 1352840), (124, 730970), (134, 676420), (155, 584776), (248, 365485), (268, 338210), (310, 292388), (335, 270568), (536, 169105), (620, 146194), (670, 135284), (1091, 83080), (1240, 73097), (1340, 67642), (2077, 43640), (2182, 41540), (2680, 33821), (4154, 21820), (4364, 20770), (5455, 16616), (8308, 10910), (8728, 10385)]