18776864

素因数分解:

$2^5\times {\mathrm{19}}^1\times {\mathrm{89}}^1\times {\mathrm{347}}^1$

素因数の和:465

約数の個数: 48

約数和(自身を含む): 39463200

約数和(自身を除く): 20686336

約数列:

[1, 2, 4, 8, 16, 19, 32, 38, 76, 89, 152, 178, 304, 347, 356, 608, 694, 712, 1388, 1424, 1691, 2776, 2848, 3382, 5552, 6593, 6764, 11104, 13186, 13528, 26372, 27056, 30883, 52744, 54112, 61766, 105488, 123532, 210976, 247064, 494128, 586777, 988256, 1173554, 2347108, 4694216, 9388432, 18776864]

約数ペア:

[(1, 18776864), (2, 9388432), (4, 4694216), (8, 2347108), (16, 1173554), (19, 988256), (32, 586777), (38, 494128), (76, 247064), (89, 210976), (152, 123532), (178, 105488), (304, 61766), (347, 54112), (356, 52744), (608, 30883), (694, 27056), (712, 26372), (1388, 13528), (1424, 13186), (1691, 11104), (2776, 6764), (2848, 6593), (3382, 5552)]