21178968

素因数分解:

$2^3\times 3^1\times {\mathrm{67}}^1\times {\mathrm{13171}}^1$

素因数の和:13247

約数の個数: 32

約数和(自身を含む): 53741760

約数和(自身を除く): 32562792

約数列:

[1, 2, 3, 4, 6, 8, 12, 24, 67, 134, 201, 268, 402, 536, 804, 1608, 13171, 26342, 39513, 52684, 79026, 105368, 158052, 316104, 882457, 1764914, 2647371, 3529828, 5294742, 7059656, 10589484, 21178968]

約数ペア:

[(1, 21178968), (2, 10589484), (3, 7059656), (4, 5294742), (6, 3529828), (8, 2647371), (12, 1764914), (24, 882457), (67, 316104), (134, 158052), (201, 105368), (268, 79026), (402, 52684), (536, 39513), (804, 26342), (1608, 13171)]