31138720

素因数分解:

$2^5\times 5^1\times {\mathrm{19}}^1\times {\mathrm{10243}}^1$

素因数の和:10277

約数の個数: 48

約数和(自身を含む): 77444640

約数和(自身を除く): 46305920

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 32, 38, 40, 76, 80, 95, 152, 160, 190, 304, 380, 608, 760, 1520, 3040, 10243, 20486, 40972, 51215, 81944, 102430, 163888, 194617, 204860, 327776, 389234, 409720, 778468, 819440, 973085, 1556936, 1638880, 1946170, 3113872, 3892340, 6227744, 7784680, 15569360, 31138720]

約数ペア:

[(1, 31138720), (2, 15569360), (4, 7784680), (5, 6227744), (8, 3892340), (10, 3113872), (16, 1946170), (19, 1638880), (20, 1556936), (32, 973085), (38, 819440), (40, 778468), (76, 409720), (80, 389234), (95, 327776), (152, 204860), (160, 194617), (190, 163888), (304, 102430), (380, 81944), (608, 51215), (760, 40972), (1520, 20486), (3040, 10243)]