12902720

素因数分解:

$2^6\times 5^1\times {\mathrm{61}}^1\times {\mathrm{661}}^1$

素因数の和:739

約数の個数: 56

約数和(自身を含む): 31275528

約数和(自身を除く): 18372808

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 61, 64, 80, 122, 160, 244, 305, 320, 488, 610, 661, 976, 1220, 1322, 1952, 2440, 2644, 3305, 3904, 4880, 5288, 6610, 9760, 10576, 13220, 19520, 21152, 26440, 40321, 42304, 52880, 80642, 105760, 161284, 201605, 211520, 322568, 403210, 645136, 806420, 1290272, 1612840, 2580544, 3225680, 6451360, 12902720]

約数ペア:

[(1, 12902720), (2, 6451360), (4, 3225680), (5, 2580544), (8, 1612840), (10, 1290272), (16, 806420), (20, 645136), (32, 403210), (40, 322568), (61, 211520), (64, 201605), (80, 161284), (122, 105760), (160, 80642), (244, 52880), (305, 42304), (320, 40321), (488, 26440), (610, 21152), (661, 19520), (976, 13220), (1220, 10576), (1322, 9760), (1952, 6610), (2440, 5288), (2644, 4880), (3305, 3904)]