321552640

素因数分解:

$2^8\times 5^1\times {\mathrm{229}}^1\times {\mathrm{1097}}^1$

素因数の和:1347

約数の個数: 72

約数和(自身を含む): 774287640

約数和(自身を除く): 452735000

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 229, 256, 320, 458, 640, 916, 1097, 1145, 1280, 1832, 2194, 2290, 3664, 4388, 4580, 5485, 7328, 8776, 9160, 10970, 14656, 17552, 18320, 21940, 29312, 35104, 36640, 43880, 58624, 70208, 73280, 87760, 140416, 146560, 175520, 251213, 280832, 293120, 351040, 502426, 702080, 1004852, 1256065, 1404160, 2009704, 2512130, 4019408, 5024260, 8038816, 10048520, 16077632, 20097040, 32155264, 40194080, 64310528, 80388160, 160776320, 321552640]

約数ペア:

[(1, 321552640), (2, 160776320), (4, 80388160), (5, 64310528), (8, 40194080), (10, 32155264), (16, 20097040), (20, 16077632), (32, 10048520), (40, 8038816), (64, 5024260), (80, 4019408), (128, 2512130), (160, 2009704), (229, 1404160), (256, 1256065), (320, 1004852), (458, 702080), (640, 502426), (916, 351040), (1097, 293120), (1145, 280832), (1280, 251213), (1832, 175520), (2194, 146560), (2290, 140416), (3664, 87760), (4388, 73280), (4580, 70208), (5485, 58624), (7328, 43880), (8776, 36640), (9160, 35104), (10970, 29312), (14656, 21940), (17552, 18320)]