28368520

素因数分解:

$2^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{163}}^1\times {\mathrm{229}}^1$

素因数の和:422

約数の個数: 64

約数和(自身を含む): 67896000

約数和(自身を除く): 39527480

約数列:

[1, 2, 4, 5, 8, 10, 19, 20, 38, 40, 76, 95, 152, 163, 190, 229, 326, 380, 458, 652, 760, 815, 916, 1145, 1304, 1630, 1832, 2290, 3097, 3260, 4351, 4580, 6194, 6520, 8702, 9160, 12388, 15485, 17404, 21755, 24776, 30970, 34808, 37327, 43510, 61940, 74654, 87020, 123880, 149308, 174040, 186635, 298616, 373270, 709213, 746540, 1418426, 1493080, 2836852, 3546065, 5673704, 7092130, 14184260, 28368520]

約数ペア:

[(1, 28368520), (2, 14184260), (4, 7092130), (5, 5673704), (8, 3546065), (10, 2836852), (19, 1493080), (20, 1418426), (38, 746540), (40, 709213), (76, 373270), (95, 298616), (152, 186635), (163, 174040), (190, 149308), (229, 123880), (326, 87020), (380, 74654), (458, 61940), (652, 43510), (760, 37327), (815, 34808), (916, 30970), (1145, 24776), (1304, 21755), (1630, 17404), (1832, 15485), (2290, 12388), (3097, 9160), (3260, 8702), (4351, 6520), (4580, 6194)]