403919740

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{641}}^1\times {\mathrm{643}}^1$

素因数の和:1307

約数の個数: 72

約数和(自身を含む): 989794512

約数和(自身を除く): 585874772

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 98, 140, 196, 245, 490, 641, 643, 980, 1282, 1286, 2564, 2572, 3205, 3215, 4487, 4501, 6410, 6430, 8974, 9002, 12820, 12860, 17948, 18004, 22435, 22505, 31409, 31507, 44870, 45010, 62818, 63014, 89740, 90020, 125636, 126028, 157045, 157535, 314090, 315070, 412163, 628180, 630140, 824326, 1648652, 2060815, 2885141, 4121630, 5770282, 8243260, 11540564, 14425705, 20195987, 28851410, 40391974, 57702820, 80783948, 100979935, 201959870, 403919740]

約数ペア:

[(1, 403919740), (2, 201959870), (4, 100979935), (5, 80783948), (7, 57702820), (10, 40391974), (14, 28851410), (20, 20195987), (28, 14425705), (35, 11540564), (49, 8243260), (70, 5770282), (98, 4121630), (140, 2885141), (196, 2060815), (245, 1648652), (490, 824326), (641, 630140), (643, 628180), (980, 412163), (1282, 315070), (1286, 314090), (2564, 157535), (2572, 157045), (3205, 126028), (3215, 125636), (4487, 90020), (4501, 89740), (6410, 63014), (6430, 62818), (8974, 45010), (9002, 44870), (12820, 31507), (12860, 31409), (17948, 22505), (18004, 22435)]