20176000

素因数分解:

$2^7\times 5^3\times {\mathrm{13}}^1\times {\mathrm{97}}^1$

素因数の和:139

約数の個数: 128

約数和(自身を含む): 54578160

約数和(自身を除く): 34402160

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 25, 26, 32, 40, 50, 52, 64, 65, 80, 97, 100, 104, 125, 128, 130, 160, 194, 200, 208, 250, 260, 320, 325, 388, 400, 416, 485, 500, 520, 640, 650, 776, 800, 832, 970, 1000, 1040, 1261, 1300, 1552, 1600, 1625, 1664, 1940, 2000, 2080, 2425, 2522, 2600, 3104, 3200, 3250, 3880, 4000, 4160, 4850, 5044, 5200, 6208, 6305, 6500, 7760, 8000, 8320, 9700, 10088, 10400, 12125, 12416, 12610, 13000, 15520, 16000, 19400, 20176, 20800, 24250, 25220, 26000, 31040, 31525, 38800, 40352, 41600, 48500, 50440, 52000, 62080, 63050, 77600, 80704, 97000, 100880, 104000, 126100, 155200, 157625, 161408, 194000, 201760, 208000, 252200, 310400, 315250, 388000, 403520, 504400, 630500, 776000, 807040, 1008800, 1261000, 1552000, 2017600, 2522000, 4035200, 5044000, 10088000, 20176000]

約数ペア:

[(1, 20176000), (2, 10088000), (4, 5044000), (5, 4035200), (8, 2522000), (10, 2017600), (13, 1552000), (16, 1261000), (20, 1008800), (25, 807040), (26, 776000), (32, 630500), (40, 504400), (50, 403520), (52, 388000), (64, 315250), (65, 310400), (80, 252200), (97, 208000), (100, 201760), (104, 194000), (125, 161408), (128, 157625), (130, 155200), (160, 126100), (194, 104000), (200, 100880), (208, 97000), (250, 80704), (260, 77600), (320, 63050), (325, 62080), (388, 52000), (400, 50440), (416, 48500), (485, 41600), (500, 40352), (520, 38800), (640, 31525), (650, 31040), (776, 26000), (800, 25220), (832, 24250), (970, 20800), (1000, 20176), (1040, 19400), (1261, 16000), (1300, 15520), (1552, 13000), (1600, 12610), (1625, 12416), (1664, 12125), (1940, 10400), (2000, 10088), (2080, 9700), (2425, 8320), (2522, 8000), (2600, 7760), (3104, 6500), (3200, 6305), (3250, 6208), (3880, 5200), (4000, 5044), (4160, 4850)]