25220000

素因数分解:

$2^5\times 5^4\times {\mathrm{13}}^1\times {\mathrm{97}}^1$

素因数の和:140

約数の個数: 120

約数和(自身を含む): 67506516

約数和(自身を除く): 42286516

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 25, 26, 32, 40, 50, 52, 65, 80, 97, 100, 104, 125, 130, 160, 194, 200, 208, 250, 260, 325, 388, 400, 416, 485, 500, 520, 625, 650, 776, 800, 970, 1000, 1040, 1250, 1261, 1300, 1552, 1625, 1940, 2000, 2080, 2425, 2500, 2522, 2600, 3104, 3250, 3880, 4000, 4850, 5000, 5044, 5200, 6305, 6500, 7760, 8125, 9700, 10000, 10088, 10400, 12125, 12610, 13000, 15520, 16250, 19400, 20000, 20176, 24250, 25220, 26000, 31525, 32500, 38800, 40352, 48500, 50440, 52000, 60625, 63050, 65000, 77600, 97000, 100880, 121250, 126100, 130000, 157625, 194000, 201760, 242500, 252200, 260000, 315250, 388000, 485000, 504400, 630500, 788125, 970000, 1008800, 1261000, 1576250, 1940000, 2522000, 3152500, 5044000, 6305000, 12610000, 25220000]

約数ペア:

[(1, 25220000), (2, 12610000), (4, 6305000), (5, 5044000), (8, 3152500), (10, 2522000), (13, 1940000), (16, 1576250), (20, 1261000), (25, 1008800), (26, 970000), (32, 788125), (40, 630500), (50, 504400), (52, 485000), (65, 388000), (80, 315250), (97, 260000), (100, 252200), (104, 242500), (125, 201760), (130, 194000), (160, 157625), (194, 130000), (200, 126100), (208, 121250), (250, 100880), (260, 97000), (325, 77600), (388, 65000), (400, 63050), (416, 60625), (485, 52000), (500, 50440), (520, 48500), (625, 40352), (650, 38800), (776, 32500), (800, 31525), (970, 26000), (1000, 25220), (1040, 24250), (1250, 20176), (1261, 20000), (1300, 19400), (1552, 16250), (1625, 15520), (1940, 13000), (2000, 12610), (2080, 12125), (2425, 10400), (2500, 10088), (2522, 10000), (2600, 9700), (3104, 8125), (3250, 7760), (3880, 6500), (4000, 6305), (4850, 5200), (5000, 5044)]