13170220

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{89}}^1\times {\mathrm{151}}^1$

素因数の和:263

約数の個数: 72

約数和(自身を含む): 32749920

約数和(自身を除く): 19579700

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 89, 98, 140, 151, 178, 196, 245, 302, 356, 445, 490, 604, 623, 755, 890, 980, 1057, 1246, 1510, 1780, 2114, 2492, 3020, 3115, 4228, 4361, 5285, 6230, 7399, 8722, 10570, 12460, 13439, 14798, 17444, 21140, 21805, 26878, 29596, 36995, 43610, 53756, 67195, 73990, 87220, 94073, 134390, 147980, 188146, 268780, 376292, 470365, 658511, 940730, 1317022, 1881460, 2634044, 3292555, 6585110, 13170220]

約数ペア:

[(1, 13170220), (2, 6585110), (4, 3292555), (5, 2634044), (7, 1881460), (10, 1317022), (14, 940730), (20, 658511), (28, 470365), (35, 376292), (49, 268780), (70, 188146), (89, 147980), (98, 134390), (140, 94073), (151, 87220), (178, 73990), (196, 67195), (245, 53756), (302, 43610), (356, 36995), (445, 29596), (490, 26878), (604, 21805), (623, 21140), (755, 17444), (890, 14798), (980, 13439), (1057, 12460), (1246, 10570), (1510, 8722), (1780, 7399), (2114, 6230), (2492, 5285), (3020, 4361), (3115, 4228)]