158155520

素因数分解:

$2^8\times 5^1\times {\mathrm{157}}^1\times {\mathrm{787}}^1$

素因数の和:965

約数の個数: 72

約数和(自身を含む): 381729264

約数和(自身を除く): 223573744

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 157, 160, 256, 314, 320, 628, 640, 785, 787, 1256, 1280, 1570, 1574, 2512, 3140, 3148, 3935, 5024, 6280, 6296, 7870, 10048, 12560, 12592, 15740, 20096, 25120, 25184, 31480, 40192, 50240, 50368, 62960, 100480, 100736, 123559, 125920, 200960, 201472, 247118, 251840, 494236, 503680, 617795, 988472, 1007360, 1235590, 1976944, 2471180, 3953888, 4942360, 7907776, 9884720, 15815552, 19769440, 31631104, 39538880, 79077760, 158155520]

約数ペア:

[(1, 158155520), (2, 79077760), (4, 39538880), (5, 31631104), (8, 19769440), (10, 15815552), (16, 9884720), (20, 7907776), (32, 4942360), (40, 3953888), (64, 2471180), (80, 1976944), (128, 1235590), (157, 1007360), (160, 988472), (256, 617795), (314, 503680), (320, 494236), (628, 251840), (640, 247118), (785, 201472), (787, 200960), (1256, 125920), (1280, 123559), (1570, 100736), (1574, 100480), (2512, 62960), (3140, 50368), (3148, 50240), (3935, 40192), (5024, 31480), (6280, 25184), (6296, 25120), (7870, 20096), (10048, 15740), (12560, 12592)]