28637440

素因数分解:

$2^8\times 5^1\times {\mathrm{13}}^1\times {\mathrm{1721}}^1$

素因数の和:1755

約数の個数: 72

約数和(自身を含む): 73915128

約数和(自身を除く): 45277688

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 32, 40, 52, 64, 65, 80, 104, 128, 130, 160, 208, 256, 260, 320, 416, 520, 640, 832, 1040, 1280, 1664, 1721, 2080, 3328, 3442, 4160, 6884, 8320, 8605, 13768, 16640, 17210, 22373, 27536, 34420, 44746, 55072, 68840, 89492, 110144, 111865, 137680, 178984, 220288, 223730, 275360, 357968, 440576, 447460, 550720, 715936, 894920, 1101440, 1431872, 1789840, 2202880, 2863744, 3579680, 5727488, 7159360, 14318720, 28637440]

約数ペア:

[(1, 28637440), (2, 14318720), (4, 7159360), (5, 5727488), (8, 3579680), (10, 2863744), (13, 2202880), (16, 1789840), (20, 1431872), (26, 1101440), (32, 894920), (40, 715936), (52, 550720), (64, 447460), (65, 440576), (80, 357968), (104, 275360), (128, 223730), (130, 220288), (160, 178984), (208, 137680), (256, 111865), (260, 110144), (320, 89492), (416, 68840), (520, 55072), (640, 44746), (832, 34420), (1040, 27536), (1280, 22373), (1664, 17210), (1721, 16640), (2080, 13768), (3328, 8605), (3442, 8320), (4160, 6884)]