90807040

素因数分解:

$2^8\times 5^1\times {\mathrm{61}}^1\times {\mathrm{1163}}^1$

素因数の和:1245

約数の個数: 72

約数和(自身を含む): 221267088

約数和(自身を除く): 130460048

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 61, 64, 80, 122, 128, 160, 244, 256, 305, 320, 488, 610, 640, 976, 1163, 1220, 1280, 1952, 2326, 2440, 3904, 4652, 4880, 5815, 7808, 9304, 9760, 11630, 15616, 18608, 19520, 23260, 37216, 39040, 46520, 70943, 74432, 78080, 93040, 141886, 148864, 186080, 283772, 297728, 354715, 372160, 567544, 709430, 744320, 1135088, 1418860, 1488640, 2270176, 2837720, 4540352, 5675440, 9080704, 11350880, 18161408, 22701760, 45403520, 90807040]

約数ペア:

[(1, 90807040), (2, 45403520), (4, 22701760), (5, 18161408), (8, 11350880), (10, 9080704), (16, 5675440), (20, 4540352), (32, 2837720), (40, 2270176), (61, 1488640), (64, 1418860), (80, 1135088), (122, 744320), (128, 709430), (160, 567544), (244, 372160), (256, 354715), (305, 297728), (320, 283772), (488, 186080), (610, 148864), (640, 141886), (976, 93040), (1163, 78080), (1220, 74432), (1280, 70943), (1952, 46520), (2326, 39040), (2440, 37216), (3904, 23260), (4652, 19520), (4880, 18608), (5815, 15616), (7808, 11630), (9304, 9760)]