18430000

素因数分解:

$2^4\times 5^4\times {\mathrm{19}}^1\times {\mathrm{97}}^1$

素因数の和:144

約数の個数: 100

約数和(自身を含む): 47453560

約数和(自身を除く): 29023560

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 25, 38, 40, 50, 76, 80, 95, 97, 100, 125, 152, 190, 194, 200, 250, 304, 380, 388, 400, 475, 485, 500, 625, 760, 776, 950, 970, 1000, 1250, 1520, 1552, 1843, 1900, 1940, 2000, 2375, 2425, 2500, 3686, 3800, 3880, 4750, 4850, 5000, 7372, 7600, 7760, 9215, 9500, 9700, 10000, 11875, 12125, 14744, 18430, 19000, 19400, 23750, 24250, 29488, 36860, 38000, 38800, 46075, 47500, 48500, 60625, 73720, 92150, 95000, 97000, 121250, 147440, 184300, 190000, 194000, 230375, 242500, 368600, 460750, 485000, 737200, 921500, 970000, 1151875, 1843000, 2303750, 3686000, 4607500, 9215000, 18430000]

約数ペア:

[(1, 18430000), (2, 9215000), (4, 4607500), (5, 3686000), (8, 2303750), (10, 1843000), (16, 1151875), (19, 970000), (20, 921500), (25, 737200), (38, 485000), (40, 460750), (50, 368600), (76, 242500), (80, 230375), (95, 194000), (97, 190000), (100, 184300), (125, 147440), (152, 121250), (190, 97000), (194, 95000), (200, 92150), (250, 73720), (304, 60625), (380, 48500), (388, 47500), (400, 46075), (475, 38800), (485, 38000), (500, 36860), (625, 29488), (760, 24250), (776, 23750), (950, 19400), (970, 19000), (1000, 18430), (1250, 14744), (1520, 12125), (1552, 11875), (1843, 10000), (1900, 9700), (1940, 9500), (2000, 9215), (2375, 7760), (2425, 7600), (2500, 7372), (3686, 5000), (3800, 4850), (3880, 4750)]