30811720

素因数分解:

$2^3\times 5^1\times {\mathrm{23}}^1\times {\mathrm{107}}^1\times {\mathrm{313}}^1$

素因数の和:454

約数の個数: 64

約数和(自身を含む): 73249920

約数和(自身を除く): 42438200

約数列:

[1, 2, 4, 5, 8, 10, 20, 23, 40, 46, 92, 107, 115, 184, 214, 230, 313, 428, 460, 535, 626, 856, 920, 1070, 1252, 1565, 2140, 2461, 2504, 3130, 4280, 4922, 6260, 7199, 9844, 12305, 12520, 14398, 19688, 24610, 28796, 33491, 35995, 49220, 57592, 66982, 71990, 98440, 133964, 143980, 167455, 267928, 287960, 334910, 669820, 770293, 1339640, 1540586, 3081172, 3851465, 6162344, 7702930, 15405860, 30811720]

約数ペア:

[(1, 30811720), (2, 15405860), (4, 7702930), (5, 6162344), (8, 3851465), (10, 3081172), (20, 1540586), (23, 1339640), (40, 770293), (46, 669820), (92, 334910), (107, 287960), (115, 267928), (184, 167455), (214, 143980), (230, 133964), (313, 98440), (428, 71990), (460, 66982), (535, 57592), (626, 49220), (856, 35995), (920, 33491), (1070, 28796), (1252, 24610), (1565, 19688), (2140, 14398), (2461, 12520), (2504, 12305), (3130, 9844), (4280, 7199), (4922, 6260)]