28501340

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{127}}^1\times {\mathrm{229}}^1$

素因数の和:379

約数の個数: 72

約数和(自身を含む): 70479360

約数和(自身を除く): 41978020

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 98, 127, 140, 196, 229, 245, 254, 458, 490, 508, 635, 889, 916, 980, 1145, 1270, 1603, 1778, 2290, 2540, 3206, 3556, 4445, 4580, 6223, 6412, 8015, 8890, 11221, 12446, 16030, 17780, 22442, 24892, 29083, 31115, 32060, 44884, 56105, 58166, 62230, 112210, 116332, 124460, 145415, 203581, 224420, 290830, 407162, 581660, 814324, 1017905, 1425067, 2035810, 2850134, 4071620, 5700268, 7125335, 14250670, 28501340]

約数ペア:

[(1, 28501340), (2, 14250670), (4, 7125335), (5, 5700268), (7, 4071620), (10, 2850134), (14, 2035810), (20, 1425067), (28, 1017905), (35, 814324), (49, 581660), (70, 407162), (98, 290830), (127, 224420), (140, 203581), (196, 145415), (229, 124460), (245, 116332), (254, 112210), (458, 62230), (490, 58166), (508, 56105), (635, 44884), (889, 32060), (916, 31115), (980, 29083), (1145, 24892), (1270, 22442), (1603, 17780), (1778, 16030), (2290, 12446), (2540, 11221), (3206, 8890), (3556, 8015), (4445, 6412), (4580, 6223)]