128794880

素因数分解:

$2^8\times 5^1\times {\mathrm{100621}}^1$

素因数の和:100642

約数の個数: 36

約数和(自身を含む): 308507052

約数和(自身を除く): 179712172

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 256, 320, 640, 1280, 100621, 201242, 402484, 503105, 804968, 1006210, 1609936, 2012420, 3219872, 4024840, 6439744, 8049680, 12879488, 16099360, 25758976, 32198720, 64397440, 128794880]

約数ペア:

[(1, 128794880), (2, 64397440), (4, 32198720), (5, 25758976), (8, 16099360), (10, 12879488), (16, 8049680), (20, 6439744), (32, 4024840), (40, 3219872), (64, 2012420), (80, 1609936), (128, 1006210), (160, 804968), (256, 503105), (320, 402484), (640, 201242), (1280, 100621)]